| author name | recommending | commenting | favorite | papers | recom. | cited | |
|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 13 | 0 | 23 | [Update] |
Latest Paper:
A Adare,
S Afanasiev,
C Aidala,
N N Ajitanand,
Y Akiba,
H Al-Bataineh,
J Alexander,
K Aoki,
Y Aramaki,
E T Atomssa,
R Averbeck,
T C Awes,
B Azmoun,
V Babintsev,
M Bai,
G Baksay,
L Baksay,
K N Barish,
B Bassalleck,
A T Basye,
S Bathe,
V Baublis,
C Baumann,
A Bazilevsky,
S Belikov,
R Belmont,
R Bennett,
A Berdnikov,
Y Berdnikov,
A A Bickley,
J S Bok,
K Boyle,
M L Brooks,
H Buesching,
V Bumazhnov,
G Bunce,
S Butsyk,
C M Camacho,
S Campbell,
C-H Chen,
C Y Chi,
M Chiu,
I J Choi,
R K Choudhury,
P Christiansen,
T Chujo,
P Chung,
O Chvala,
V Cianciolo,
Z Citron,
B A Cole,
M Connors,
P Constantin,
M Csanád,
T Csörgő,
T Dahms,
S Dairaku,
I Danchev,
K Das,
A Datta,
G David,
A Denisov,
A Deshpande,
E J Desmond,
O Dietzsch,
A Dion,
M Donadelli,
O Drapier,
A Drees,
K A Drees,
J M Durham,
A Durum,
D Dutta,
S Edwards,
Y V Efremenko,
F Ellinghaus,
T Engelmore,
A Enokizono,
H En'yo,
S Esumi,
B Fadem,
D E Fields,
M Finger,
M Finger Jr,
F Fleuret,
S L Fokin,
Z Fraenkel,
J E Frantz,
A Franz,
A D Frawley,
K Fujiwara,
Y Fukao,
T Fusayasu,
I Garishvili,
A Glenn,
H Gong,
M Gonin,
Y Goto,
R Granier de Cassagnac,
N Grau,
S V Greene,
M Grosse Perdekamp,
T Gunji,
H-Å Gustafsson,
J S Haggerty,
K I Hahn,
H Hamagaki,
J Hamblen,
R Han,
J Hanks,
E P Hartouni,
E Haslum,
R Hayano,
X He,
M Heffner,
T K Hemmick,
T Hester,
J C Hill,
M Hohlmann,
W Holzmann,
K Homma,
B Hong,
T Horaguchi,
D Hornback,
S Huang,
T Ichihara,
R Ichimiya,
J Ide,
Y Ikeda,
K Imai,
M Inaba,
D Isenhower,
M Ishihara,
T Isobe,
M Issah,
A Isupov,
D Ivanischev,
B V Jacak,
J Jia,
J Jin,
B M Johnson,
K S Joo,
D Jouan,
D S Jumper,
F Kajihara,
S Kametani,
N Kamihara,
J Kamin,
J H Kang,
J Kapustinsky,
K Karatsu,
D Kawall,
M Kawashima,
A V Kazantsev,
T Kempel,
A Khanzadeev,
K M Kijima,
B I Kim,
D H Kim,
D J Kim,
E Kim,
E J Kim,
S H Kim,
Y J Kim,
E Kinney,
K Kiriluk,
A Kiss,
E Kistenev,
L Kochenda,
B Komkov,
M Konno,
J Koster,
D Kotchetkov,
A Kozlov,
A Král,
A Kravitz,
G J Kunde,
K Kurita,
M Kurosawa,
Y Kwon,
G S Kyle,
R Lacey,
Y S Lai,
J G Lajoie,
A Lebedev,
D M Lee,
J Lee,
K Lee,
K B Lee,
K S Lee,
M J Leitch,
M A L Leite,
E Leitner,
B Lenzi,
X Li,
P Liebing,
L A Linden Levy,
T Liška,
A Litvinenko,
H Liu,
M X Liu,
B Love,
R Luechtenborg,
D Lynch,
C F Maguire,
Y I Makdisi,
A Malakhov,
M D Malik,
V I Manko,
E Mannel,
Y Mao,
H Masui,
F Matathias,
M McCumber,
P L McGaughey,
N Means,
B Meredith,
Y Miake,
A C Mignerey,
P Mikeš,
K Miki,
A Milov,
M Mishra,
J T Mitchell,
A K Mohanty,
Y Morino,
A Morreale,
D P Morrison,
T V Moukhanova,
J Murata,
S Nagamiya,
J L Nagle,
M Naglis,
M I Nagy,
I Nakagawa,
Y Nakamiya,
T Nakamura,
K Nakano,
J Newby,
M Nguyen,
R Nouicer,
A S Nyanin,
E O'Brien,
S X Oda,
C A Ogilvie,
M Oka,
K Okada,
Y Onuki,
A Oskarsson,
M Ouchida,
K Ozawa,
R Pak,
V Pantuev,
V Papavassiliou,
I H Park,
J Park,
S K Park,
W J Park,
S F Pate,
H Pei,
J-C Peng,
H Pereira,
V Peresedov,
D Yu Peressounko,
C Pinkenburg,
R P Pisani,
M Proissl,
M L Purschke,
A K Purwar,
H Qu,
J Rak,
A Rakotozafindrabe,
I Ravinovich,
K F Read,
K Reygers,
V Riabov,
Y Riabov,
E Richardson,
D Roach,
G Roche,
S D Rolnick,
M Rosati,
C A Rosen,
S S E Rosendahl,
P Rosnet,
P Rukoyatkin,
P Ružička,
B Sahlmueller,
N Saito,
T Sakaguchi,
K Sakashita,
V Samsonov,
S Sano,
T Sato,
S Sawada,
K Sedgwick,
J Seele,
R Seidl,
A Yu Semenov,
R Seto,
D Sharma,
I Shein,
T-A Shibata,
K Shigaki,
M Shimomura,
K Shoji,
P Shukla,
A Sickles,
C L Silva,
D Silvermyr,
C Silvestre,
K S Sim,
B K Singh,
C P Singh,
V Singh,
M Slunečka,
R A Soltz,
W E Sondheim,
S P Sorensen,
I V Sourikova,
N A Sparks,
P W Stankus,
E Stenlund,
S P Stoll,
T Sugitate,
A Sukhanov,
J Sziklai,
E M Takagui,
A Taketani,
R Tanabe,
Y Tanaka,
K Tanida,
M J Tannenbaum,
S Tarafdar,
A Taranenko,
P Tarján,
H Themann,
T L Thomas,
M Togawa,
A Toia,
L Tomášek,
H Torii,
R S Towell,
I Tserruya,
Y Tsuchimoto,
C Vale,
H Valle,
H W van Hecke,
E Vazquez-Zambrano,
A Veicht,
J Velkovska,
R Vértesi,
A A Vinogradov,
M Virius,
V Vrba,
E Vznuzdaev,
X R Wang,
D Watanabe,
K Watanabe,
Y Watanabe,
F Wei,
R Wei,
J Wessels,
S N White,
D Winter,
J P Wood,
C L Woody,
R M Wright,
M Wysocki,
W Xie,
Y L Yamaguchi,
K Yamaura,
R Yang,
A Yanovich,
J Ying,
S Yokkaichi,
Z You,
G R Young,
I Younus,
I E Yushmanov,
W A Zajc,
C Zhang,
S Zhou,
L Zolin
University of Colorado, Boulder, Colorado 80309, USA.
Flow coefficients v_{n} for n=2, 3, 4, characterizing the anisotropic collective flow in Au+Au collisions at sqrt[s_{NN}]=200 GeV, are measured relative to event planes Ψ_{n}, determined at large rapidity. We report v_{n} as a function of transverse momentum and collision centrality, and study the correlations among the event planes of different order n. The v_{n} are well described by hydrodynamic models which employ a Glauber Monte Carlo initial state geometry with fluctuations, providing additional constraining power on the interplay between initial conditions and the effects of viscosity as the system evolves. This new constraint can serve to improve the precision of the extracted shear viscosity to entropy density ratio η/s.
A Adare,
S Afanasiev,
C Aidala,
N N Ajitanand,
Y Akiba,
H Al-Bataineh,
J Alexander,
A Angerami,
K Aoki,
N Apadula,
Y Aramaki,
E T Atomssa,
R Averbeck,
T C Awes,
B Azmoun,
V Babintsev,
M Bai,
G Baksay,
L Baksay,
K N Barish,
B Bassalleck,
A T Basye,
S Bathe,
V Baublis,
C Baumann,
A Bazilevsky,
S Belikov,
R Belmont,
R Bennett,
A Berdnikov,
Y Berdnikov,
J H Bhom,
D S Blau,
J S Bok,
K Boyle,
M L Brooks,
H Buesching,
V Bumazhnov,
G Bunce,
S Butsyk,
S Campbell,
A Caringi,
C-H Chen,
C Y Chi,
M Chiu,
I J Choi,
J B Choi,
R K Choudhury,
P Christiansen,
T Chujo,
P Chung,
O Chvala,
V Cianciolo,
Z Citron,
B A Cole,
Z Conesa Del Valle,
M Connors,
M Csanád,
T Csörgő,
T Dahms,
S Dairaku,
I Danchev,
K Das,
A Datta,
G David,
M K Dayananda,
A Denisov,
A Deshpande,
E J Desmond,
K V Dharmawardane,
O Dietzsch,
A Dion,
M Donadelli,
O Drapier,
A Drees,
K A Drees,
J M Durham,
A Durum,
D Dutta,
L D'Orazio,
S Edwards,
Y V Efremenko,
F Ellinghaus,
T Engelmore,
A Enokizono,
H En'yo,
S Esumi,
B Fadem,
D E Fields,
M Finger,
M Finger Jr,
F Fleuret,
S L Fokin,
Z Fraenkel,
J E Frantz,
A Franz,
A D Frawley,
K Fujiwara,
Y Fukao,
T Fusayasu,
I Garishvili,
A Glenn,
H Gong,
M Gonin,
Y Goto,
R Granier de Cassagnac,
N Grau,
S V Greene,
G Grim,
M Grosse Perdekamp,
T Gunji,
H-Å Gustafsson,
J S Haggerty,
K I Hahn,
H Hamagaki,
J Hamblen,
R Han,
J Hanks,
E Haslum,
R Hayano,
X He,
M Heffner,
T K Hemmick,
T Hester,
J C Hill,
M Hohlmann,
W Holzmann,
K Homma,
B Hong,
T Horaguchi,
D Hornback,
S Huang,
T Ichihara,
R Ichimiya,
Y Ikeda,
K Imai,
M Inaba,
D Isenhower,
M Ishihara,
M Issah,
A Isupov,
D Ivanischev,
Y Iwanaga,
B V Jacak,
J Jia,
X Jiang,
J Jin,
B M Johnson,
T Jones,
K S Joo,
D Jouan,
D S Jumper,
F Kajihara,
J Kamin,
J H Kang,
J Kapustinsky,
K Karatsu,
M Kasai,
D Kawall,
M Kawashima,
A V Kazantsev,
T Kempel,
A Khanzadeev,
K M Kijima,
J Kikuchi,
A Kim,
B I Kim,
D J Kim,
E J Kim,
Y-J Kim,
E Kinney,
A Kiss,
E Kistenev,
L Kochenda,
B Komkov,
M Konno,
J Koster,
A Král,
A Kravitz,
G J Kunde,
K Kurita,
M Kurosawa,
Y Kwon,
G S Kyle,
R Lacey,
Y S Lai,
J G Lajoie,
A Lebedev,
D M Lee,
J Lee,
K B Lee,
K S Lee,
M J Leitch,
M A L Leite,
X Li,
P Lichtenwalner,
P Liebing,
L A Linden Levy,
T Liška,
A Litvinenko,
H Liu,
M X Liu,
B Love,
D Lynch,
C F Maguire,
Y I Makdisi,
A Malakhov,
M D Malik,
V I Manko,
E Mannel,
Y Mao,
H Masui,
F Matathias,
M McCumber,
P L McGaughey,
N Means,
B Meredith,
Y Miake,
T Mibe,
A C Mignerey,
K Miki,
A Milov,
J T Mitchell,
A K Mohanty,
H J Moon,
Y Morino,
A Morreale,
D P Morrison,
T V Moukhanova,
T Murakami,
J Murata,
S Nagamiya,
J L Nagle,
M Naglis,
M I Nagy,
I Nakagawa,
Y Nakamiya,
K R Nakamura,
T Nakamura,
K Nakano,
S Nam,
J Newby,
M Nguyen,
M Nihashi,
R Nouicer,
A S Nyanin,
C Oakley,
E O'Brien,
S X Oda,
C A Ogilvie,
M Oka,
K Okada,
Y Onuki,
A Oskarsson,
M Ouchida,
K Ozawa,
R Pak,
V Pantuev,
V Papavassiliou,
I H Park,
S K Park,
W J Park,
S F Pate,
H Pei,
J-C Peng,
H Pereira,
V Peresedov,
D Yu Peressounko,
R Petti,
C Pinkenburg,
R P Pisani,
M Proissl,
M L Purschke,
H Qu,
J Rak,
I Ravinovich,
K F Read,
K Reygers,
V Riabov,
Y Riabov,
E Richardson,
D Roach,
G Roche,
S D Rolnick,
M Rosati,
C A Rosen,
S S E Rosendahl,
P Rukoyatkin,
P Ružička,
B Sahlmueller,
N Saito,
T Sakaguchi,
K Sakashita,
V Samsonov,
S Sano,
T Sato,
S Sawada,
K Sedgwick,
J Seele,
R Seidl,
R Seto,
D Sharma,
I Shein,
T-A Shibata,
K Shigaki,
M Shimomura,
K Shoji,
P Shukla,
A Sickles,
C L Silva,
D Silvermyr,
C Silvestre,
K S Sim,
B K Singh,
C P Singh,
V Singh,
M Slunečka,
R A Soltz,
W E Sondheim,
S P Sorensen,
I V Sourikova,
P W Stankus,
E Stenlund,
S P Stoll,
T Sugitate,
A Sukhanov,
J Sziklai,
E M Takagui,
A Taketani,
R Tanabe,
Y Tanaka,
S Taneja,
K Tanida,
M J Tannenbaum,
S Tarafdar,
A Taranenko,
H Themann,
D Thomas,
T L Thomas,
M Togawa,
A Toia,
L Tomášek,
H Torii,
R S Towell,
I Tserruya,
Y Tsuchimoto,
C Vale,
H Valle,
H W van Hecke,
E Vazquez-Zambrano,
A Veicht,
J Velkovska,
R Vértesi,
M Virius,
V Vrba,
E Vznuzdaev,
X R Wang,
D Watanabe,
K Watanabe,
Y Watanabe,
F Wei,
R Wei,
J Wessels,
S N White,
D Winter,
C L Woody,
R M Wright,
M Wysocki,
Y L Yamaguchi,
K Yamaura,
R Yang,
A Yanovich,
J Ying,
S Yokkaichi,
Z You,
G R Young,
I Younus,
I E Yushmanov,
W A Zajc,
S Zhou,
L Zolin
University of Colorado, Boulder, Colorado 80309, USA.
Back-to-back hadron pair yields in d+Au and p+p collisions at sqrt[s_{NN}]=200 GeV were measured with the PHENIX detector at the Relativistic Heavy Ion Collider. Rapidity separated hadron pairs were detected with the trigger hadron at pseudorapidity |η|<0.35 and the associated hadron at forward rapidity (deuteron direction, 3.0<η<3.8). Pairs were also detected with both hadrons measured at forward rapidity; in this case, the yield of back-to-back hadron pairs in d+Au collisions with small impact parameters is observed to be suppressed by a factor of 10 relative to p+p collisions. The kinematics of these pairs is expected to probe partons in the Au nucleus with a low fraction x of the nucleon momenta, where the gluon densities rise sharply. The observed suppression as a function of nuclear thickness, p_{T}, and η points to cold nuclear matter effects arising at high parton densities.
A Adare,
S Afanasiev,
C Aidala,
N N Ajitanand,
Y Akiba,
H Al-Bataineh,
J Alexander,
A Angerami,
K Aoki,
N Apadula,
L Aphecetche,
Y Aramaki,
J Asai,
E T Atomssa,
R Averbeck,
T C Awes,
B Azmoun,
V Babintsev,
M Bai,
G Baksay,
L Baksay,
A Baldisseri,
K N Barish,
P D Barnes,
B Bassalleck,
A T Basye,
S Bathe,
S Batsouli,
V Baublis,
C Baumann,
A Bazilevsky,
S Belikov,
R Belmont,
R Bennett,
A Berdnikov,
Y Berdnikov,
J H Bhom,
A A Bickley,
D S Blau,
J G Boissevain,
J S Bok,
H Borel,
K Boyle,
M L Brooks,
H Buesching,
V Bumazhnov,
G Bunce,
S Butsyk,
C M Camacho,
S Campbell,
A Caringi,
B S Chang,
W C Chang,
J-L Charvet,
C-H Chen,
S Chernichenko,
C Y Chi,
M Chiu,
I J Choi,
J B Choi,
R K Choudhury,
P Christiansen,
T Chujo,
P Chung,
A Churyn,
O Chvala,
V Cianciolo,
Z Citron,
B A Cole,
Z Conesa Del Valle,
M Connors,
P Constantin,
M Csanád,
T Csörgő,
T Dahms,
S Dairaku,
I Danchev,
K Das,
A Datta,
G David,
M K Dayananda,
A Denisov,
D d'Enterria,
A Deshpande,
E J Desmond,
K V Dharmawardane,
O Dietzsch,
A Dion,
M Donadelli,
O Drapier,
A Drees,
K A Drees,
A K Dubey,
J M Durham,
A Durum,
D Dutta,
V Dzhordzhadze,
L D'Orazio,
S Edwards,
Y V Efremenko,
F Ellinghaus,
T Engelmore,
A Enokizono,
H En'yo,
S Esumi,
K O Eyser,
B Fadem,
D E Fields,
M Finger,
M Finger Jr,
F Fleuret,
S L Fokin,
Z Fraenkel,
J E Frantz,
A Franz,
A D Frawley,
K Fujiwara,
Y Fukao,
T Fusayasu,
I Garishvili,
A Glenn,
H Gong,
M Gonin,
J Gosset,
Y Goto,
R Granier de Cassagnac,
N Grau,
S V Greene,
G Grim,
M Grosse Perdekamp,
T Gunji,
H-Å Gustafsson,
A Hadj Henni,
J S Haggerty,
K I Hahn,
H Hamagaki,
J Hamblen,
R Han,
J Hanks,
E P Hartouni,
K Haruna,
E Haslum,
R Hayano,
X He,
M Heffner,
T K Hemmick,
T Hester,
J C Hill,
M Hohlmann,
W Holzmann,
K Homma,
B Hong,
T Horaguchi,
D Hornback,
S Huang,
T Ichihara,
R Ichimiya,
H Iinuma,
Y Ikeda,
K Imai,
J Imrek,
M Inaba,
D Isenhower,
M Ishihara,
T Isobe,
M Issah,
A Isupov,
D Ivanischev,
Y Iwanaga,
B V Jacak,
J Jia,
X Jiang,
J Jin,
B M Johnson,
T Jones,
K S Joo,
D Jouan,
D S Jumper,
F Kajihara,
S Kametani,
N Kamihara,
J Kamin,
J H Kang,
J Kapustinsky,
K Karatsu,
M Kasai,
D Kawall,
M Kawashima,
A V Kazantsev,
T Kempel,
A Khanzadeev,
K M Kijima,
J Kikuchi,
A Kim,
B I Kim,
D H Kim,
D J Kim,
E Kim,
E J Kim,
S H Kim,
Y-J Kim,
E Kinney,
K Kiriluk,
A Kiss,
E Kistenev,
J Klay,
C Klein-Boesing,
L Kochenda,
B Komkov,
M Konno,
J Koster,
A Kozlov,
A Král,
A Kravitz,
G J Kunde,
K Kurita,
M Kurosawa,
M J Kweon,
Y Kwon,
G S Kyle,
R Lacey,
Y S Lai,
J G Lajoie,
D Layton,
A Lebedev,
D M Lee,
J Lee,
K B Lee,
K S Lee,
T Lee,
M J Leitch,
M A L Leite,
B Lenzi,
X Li,
P Lichtenwalner,
P Liebing,
L A Linden Levy,
T Liška,
A Litvinenko,
H Liu,
M X Liu,
B Love,
D Lynch,
C F Maguire,
Y I Makdisi,
A Malakhov,
M D Malik,
V I Manko,
E Mannel,
Y Mao,
L Mašek,
H Masui,
F Matathias,
M McCumber,
P L McGaughey,
D McGlinchey,
N Means,
B Meredith,
Y Miake,
T Mibe,
A C Mignerey,
P Mikeš,
K Miki,
A Milov,
M Mishra,
J T Mitchell,
A K Mohanty,
H J Moon,
Y Morino,
A Morreale,
D P Morrison,
T V Moukhanova,
D Mukhopadhyay,
T Murakami,
J Murata,
S Nagamiya,
J L Nagle,
M Naglis,
M I Nagy,
I Nakagawa,
Y Nakamiya,
K R Nakamura,
T Nakamura,
K Nakano,
S Nam,
J Newby,
M Nguyen,
M Nihashi,
T Niita,
R Nouicer,
A S Nyanin,
C Oakley,
E O'Brien,
S X Oda,
C A Ogilvie,
M Oka,
K Okada,
Y Onuki,
A Oskarsson,
M Ouchida,
K Ozawa,
R Pak,
A P T Palounek,
V Pantuev,
V Papavassiliou,
I H Park,
J Park,
S K Park,
W J Park,
S F Pate,
H Pei,
J-C Peng,
H Pereira,
V Peresedov,
D Yu Peressounko,
R Petti,
C Pinkenburg,
R P Pisani,
M Proissl,
M L Purschke,
A K Purwar,
H Qu,
J Rak,
A Rakotozafindrabe,
I Ravinovich,
K F Read,
S Rembeczki,
K Reygers,
V Riabov,
Y Riabov,
E Richardson,
D Roach,
G Roche,
S D Rolnick,
M Rosati,
C A Rosen,
S S E Rosendahl,
P Rosnet,
P Rukoyatkin,
P Ružička,
V L Rykov,
B Sahlmueller,
N Saito,
T Sakaguchi,
S Sakai,
K Sakashita,
V Samsonov,
S Sano,
T Sato,
S Sawada,
K Sedgwick,
J Seele,
R Seidl,
A Yu Semenov,
V Semenov,
R Seto,
D Sharma,
I Shein,
T-A Shibata,
K Shigaki,
M Shimomura,
K Shoji,
P Shukla,
A Sickles,
C L Silva,
D Silvermyr,
C Silvestre,
K S Sim,
B K Singh,
C P Singh,
V Singh,
M Slunečka,
A Soldatov,
R A Soltz,
W E Sondheim,
S P Sorensen,
I V Sourikova,
F Staley,
P W Stankus,
E Stenlund,
M Stepanov,
A Ster,
S P Stoll,
T Sugitate,
C Suire,
A Sukhanov,
J Sziklai,
E M Takagui,
A Taketani,
R Tanabe,
Y Tanaka,
S Taneja,
K Tanida,
M J Tannenbaum,
S Tarafdar,
A Taranenko,
P Tarján,
H Themann,
D Thomas,
T L Thomas,
M Togawa,
A Toia,
L Tomášek,
Y Tomita,
H Torii,
R S Towell,
V-N Tram,
I Tserruya,
Y Tsuchimoto,
C Vale,
H Valle,
H W van Hecke,
E Vazquez-Zambrano,
A Veicht,
J Velkovska,
R Vértesi,
A A Vinogradov,
M Virius,
A Vossen,
V Vrba,
E Vznuzdaev,
X R Wang,
D Watanabe,
K Watanabe,
Y Watanabe,
F Wei,
R Wei,
J Wessels,
S N White,
D Winter,
C L Woody,
R M Wright,
M Wysocki,
W Xie,
Y L Yamaguchi,
K Yamaura,
R Yang,
A Yanovich,
J Ying,
S Yokkaichi,
Z You,
G R Young,
I Younus,
I E Yushmanov,
W A Zajc,
O Zaudtke,
C Zhang,
S Zhou,
L Zolin
University of Colorado, Boulder, Colorado 80309, USA.
We present measurements of J/ψ yields in d+Au collisions at sqrt[s_{NN}]=200 GeV recorded by the PHENIX experiment and compare them with yields in p+p collisions at the same energy per nucleon-nucleon collision. The measurements cover a large kinematic range in J/ψ rapidity (-2.2<y<2.4) with high statistical precision and are compared with two theoretical models: one with nuclear shadowing combined with final state breakup and one with coherent gluon saturation effects. In order to remove model dependent systematic uncertainties we also compare the data to a simple geometric model. The forward rapidity data are inconsistent with nuclear modifications that are linear or exponential in the density weighted longitudinal thickness, such as those from the final state breakup of the bound state.
A Adare,
S Afanasiev,
C Aidala,
N N Ajitanand,
Y Akiba,
R Akimoto,
J Alexander,
H Al-Ta'ani,
K R Andrews,
A Angerami,
K Aoki,
N Apadula,
E Appelt,
Y Aramaki,
R Armendariz,
E C Aschenauer,
T C Awes,
B Azmoun,
V Babintsev,
M Bai,
B Bannier,
K N Barish,
B Bassalleck,
A T Basye,
S Bathe,
V Baublis,
C Baumann,
A Bazilevsky,
R Belmont,
J Ben-Benjamin,
R Bennett,
A Berdnikov,
Y Berdnikov,
D S Blau,
J S Bok,
K Boyle,
M L Brooks,
D Broxmeyer,
H Buesching,
V Bumazhnov,
G Bunce,
S Butsyk,
S Campbell,
A Caringi,
P Castera,
C-H Chen,
C Y Chi,
M Chiu,
I J Choi,
J B Choi,
R K Choudhury,
P Christiansen,
T Chujo,
O Chvala,
V Cianciolo,
Z Citron,
B A Cole,
Z Conesa del Valle,
M Connors,
M Csanád,
T Csörgo,
S Dairaku,
A Datta,
G David,
M K Dayananda,
A Denisov,
A Deshpande,
E J Desmond,
K V Dharmawardane,
O Dietzsch,
A Dion,
M Donadelli,
L D'Orazio,
O Drapier,
A Drees,
K A Drees,
J M Durham,
A Durum,
Y V Efremenko,
T Engelmore,
A Enokizono,
H En'yo,
S Esumi,
B Fadem,
D E Fields,
M Finger Jr,
M Finger,
F Fleuret,
S L Fokin,
J E Frantz,
A Franz,
A D Frawley,
Y Fukao,
T Fusayasu,
I Garishvili,
A Glenn,
X Gong,
M Gonin,
Y Goto,
R Granier de Cassagnac,
N Grau,
S V Greene,
M Grosse Perdekamp,
T Gunji,
L Guo,
H-Å Gustafsson,
J S Haggerty,
K I Hahn,
H Hamagaki,
J Hamblen,
J Hanks,
R Han,
C Harper,
K Hashimoto,
E Haslum,
R Hayano,
T K Hemmick,
T Hester,
X He,
J C Hill,
R S Hollis,
W Holzmann,
K Homma,
B Hong,
T Horaguchi,
Y Hori,
D Hornback,
S Huang,
T Ichihara,
R Ichimiya,
H Iinuma,
Y Ikeda,
K Imai,
M Inaba,
A Iordanova,
D Isenhower,
M Ishihara,
M Issah,
A Isupov,
D Ivanischev,
Y Iwanaga,
B V Jacak,
J Jia,
X Jiang,
B M Johnson,
T Jones,
K S Joo,
D Jouan,
J Kamin,
S Kaneti,
B H Kang,
J H Kang,
J S Kang,
J Kapustinsky,
K Karatsu,
M Kasai,
D Kawall,
A V Kazantsev,
T Kempel,
A Khanzadeev,
K M Kijima,
B I Kim,
D J Kim,
E J Kim,
Y-J Kim,
Y K Kim,
E Kinney,
Á Kiss,
E Kistenev,
D Kleinjan,
P Kline,
L Kochenda,
B Komkov,
M Konno,
J Koster,
D Kotov,
A Král,
G J Kunde,
K Kurita,
M Kurosawa,
Y Kwon,
G S Kyle,
R Lacey,
Y S Lai,
J G Lajoie,
A Lebedev,
D M Lee,
J Lee,
K B Lee,
K S Lee,
S H Lee,
S R Lee,
M J Leitch,
M A L Leite,
P Lichtenwalner,
S H Lim,
L A Linden Levy,
A Litvinenko,
H Liu,
M X Liu,
X Li,
B Love,
D Lynch,
C F Maguire,
Y I Makdisi,
A Malakhov,
A Manion,
V I Manko,
E Mannel,
Y Mao,
H Masui,
M McCumber,
P L McGaughey,
D McGlinchey,
C McKinney,
N Means,
M Mendoza,
B Meredith,
Y Miake,
T Mibe,
A C Mignerey,
K Miki,
A Milov,
J T Mitchell,
Y Miyachi,
A K Mohanty,
H J Moon,
Y Morino,
A Morreale,
D P Morrison,
S Motschwiller,
T V Moukhanova,
T Murakami,
J Murata,
S Nagamiya,
J L Nagle,
M Naglis,
M I Nagy,
I Nakagawa,
Y Nakamiya,
K R Nakamura,
T Nakamura,
K Nakano,
J Newby,
M Nguyen,
M Nihashi,
R Nouicer,
A S Nyanin,
C Oakley,
E O'Brien,
C A Ogilvie,
K Okada,
M Oka,
A Oskarsson,
M Ouchida,
K Ozawa,
R Pak,
V Pantuev,
V Papavassiliou,
B H Park,
I H Park,
S K Park,
S F Pate,
H Pei,
J-C Peng,
H Pereira,
V Peresedov,
D Yu Peressounko,
R Petti,
C Pinkenburg,
R P Pisani,
M Proissl,
M L Purschke,
H Qu,
J Rak,
I Ravinovich,
K F Read,
K Reygers,
V Riabov,
Y Riabov,
E Richardson,
D Roach,
G Roche,
S D Rolnick,
M Rosati,
S S E Rosendahl,
P Rukoyatkin,
B Sahlmueller,
N Saito,
T Sakaguchi,
V Samsonov,
S Sano,
M Sarsour,
T Sato,
M Savastio,
S Sawada,
K Sedgwick,
R Seidl,
R Seto,
D Sharma,
I Shein,
T-A Shibata,
K Shigaki,
H H Shim,
M Shimomura,
K Shoji,
P Shukla,
A Sickles,
C L Silva,
D Silvermyr,
C Silvestre,
K S Sim,
B K Singh,
C P Singh,
V Singh,
M Slunečka,
T Sodre,
R A Soltz,
W E Sondheim,
S P Sorensen,
I V Sourikova,
P W Stankus,
E Stenlund,
S P Stoll,
T Sugitate,
A Sukhanov,
J Sun,
J Sziklai,
E M Takagui,
A Takahara,
A Taketani,
R Tanabe,
Y Tanaka,
S Taneja,
K Tanida,
M J Tannenbaum,
S Tarafdar,
A Taranenko,
E Tennant,
H Themann,
D Thomas,
M Togawa,
L Tomášek,
M Tomášek,
H Torii,
R S Towell,
I Tserruya,
Y Tsuchimoto,
K Utsunomiya,
C Vale,
H W van Hecke,
E Vazquez-Zambrano,
A Veicht,
J Velkovska,
R Vértesi,
M Virius,
A Vossen,
V Vrba,
E Vznuzdaev,
X R Wang,
D Watanabe,
K Watanabe,
Y Watanabe,
Y S Watanabe,
F Wei,
R Wei,
J Wessels,
S N White,
D Winter,
C L Woody,
R M Wright,
M Wysocki,
Y L Yamaguchi,
R Yang,
A Yanovich,
J Ying,
S Yokkaichi,
J S Yoo,
G R Young,
I Younus,
Z You,
I E Yushmanov,
W A Zajc,
A Zelenski,
S Zhou,
L Zolin
University of Colorado, Boulder, Colorado 80309, USA.
Large parity-violating longitudinal single-spin asymmetries A(L)(e+)=-0.86(-0.14)(+0.30) and A(L)(e-)= 0.88(-0.71)(+0.12) are observed for inclusive high transverse momentum electrons and positrons in polarized p+p collisions at a center-of-mass energy of sqrt[s]= 500 GeV with the PHENIX detector at RHIC. These e± come mainly from the decay of W± and Z0 bosons, and their asymmetries directly demonstrate parity violation in the couplings of the W± to the light quarks. The observed electron and positron yields were used to estimate W± boson production cross sections for the e± channels of σ(pp → W+ X) × BR(W+ → e+ ν(e))= 144.1 ± 21.2(stat)(-10.3)(+3.4)(syst) ± 21.6(norm) pb, and σ(pp → W- X) × BR(W- → e- ν[over ¯](e))= 31.7 ± 12.1(stat)(-8.2)(+10.1)(syst) ± 4.8(norm) pb.
A Adare,
S Afanasiev,
C Aidala,
N N Ajitanand,
Y Akiba,
H Al-Bataineh,
J Alexander,
K Aoki,
L Aphecetche,
R Armendariz,
S H Aronson,
J Asai,
E T Atomssa,
R Averbeck,
T C Awes,
B Azmoun,
V Babintsev,
M Bai,
G Baksay,
L Baksay,
A Baldisseri,
K N Barish,
P D Barnes,
B Bassalleck,
A T Basye,
S Bathe,
S Batsouli,
V Baublis,
C Baumann,
A Bazilevsky,
S Belikov,
R Bennett,
A Berdnikov,
Y Berdnikov,
A A Bickley,
J G Boissevain,
H Borel,
K Boyle,
M L Brooks,
H Buesching,
V Bumazhnov,
G Bunce,
S Butsyk,
C M Camacho,
S Campbell,
B S Chang,
W C Chang,
J-L Charvet,
S Chernichenko,
J Chiba,
C Y Chi,
M Chiu,
I J Choi,
R K Choudhury,
T Chujo,
P Chung,
A Churyn,
V Cianciolo,
Z Citron,
C R Cleven,
B A Cole,
M P Comets,
P Constantin,
M Csanád,
T Csörgo,
T Dahms,
S Dairaku,
K Das,
G David,
M B Deaton,
K Dehmelt,
H Delagrange,
A Denisov,
D d'Enterria,
A Deshpande,
E J Desmond,
O Dietzsch,
A Dion,
M Donadelli,
O Drapier,
A Drees,
K A Drees,
A K Dubey,
A Durum,
D Dutta,
V Dzhordzhadze,
Y V Efremenko,
J Egdemir,
F Ellinghaus,
W S Emam,
T Engelmore,
A Enokizono,
H En'yo,
S Esumi,
K O Eyser,
B Fadem,
D E Fields,
M Finger Jr,
M Finger,
F Fleuret,
S L Fokin,
Z Fraenkel,
J E Frantz,
A Franz,
A D Frawley,
K Fujiwara,
Y Fukao,
T Fusayasu,
S Gadrat,
I Garishvili,
A Glenn,
H Gong,
M Gonin,
J Gosset,
Y Goto,
R Granier de Cassagnac,
N Grau,
S V Greene,
M Grosse Perdekamp,
T Gunji,
H-A Gustafsson,
T Hachiya,
A Hadj Henni,
C Haegemann,
J S Haggerty,
H Hamagaki,
R Han,
H Harada,
E P Hartouni,
K Haruna,
E Haslum,
R Hayano,
M Heffner,
T K Hemmick,
T Hester,
X He,
H Hiejima,
J C Hill,
R Hobbs,
M Hohlmann,
W Holzmann,
K Homma,
B Hong,
T Horaguchi,
D Hornback,
S Huang,
T Ichihara,
R Ichimiya,
Y Ikeda,
K Imai,
J Imrek,
M Inaba,
Y Inoue,
D Isenhower,
L Isenhower,
M Ishihara,
T Isobe,
M Issah,
A Isupov,
D Ivanischev,
B V Jacak,
J Jia,
J Jin,
O Jinnouchi,
B M Johnson,
K S Joo,
D Jouan,
F Kajihara,
S Kametani,
N Kamihara,
J Kamin,
M Kaneta,
J H Kang,
H Kanou,
J Kapustinsky,
D Kawall,
A V Kazantsev,
T Kempel,
A Khanzadeev,
K M Kijima,
J Kikuchi,
B I Kim,
D H Kim,
D J Kim,
E Kim,
S H Kim,
E Kinney,
K Kiriluk,
A Kiss,
E Kistenev,
A Kiyomichi,
J Klay,
C Klein-Boesing,
L Kochenda,
V Kochetkov,
B Komkov,
M Konno,
J Koster,
D Kotchetkov,
A Kozlov,
A Král,
A Kravitz,
J Kubart,
G J Kunde,
N Kurihara,
K Kurita,
M Kurosawa,
M J Kweon,
Y Kwon,
G S Kyle,
R Lacey,
Y-S Lai,
Y S Lai,
J G Lajoie,
D Layton,
A Lebedev,
D M Lee,
K B Lee,
M K Lee,
T Lee,
M J Leitch,
M A L Leite,
B Lenzi,
P Liebing,
T Liska,
A Litvinenko,
H Liu,
M X Liu,
X Li,
B Love,
D Lynch,
C F Maguire,
Y I Makdisi,
A Malakhov,
M D Malik,
V I Manko,
E Mannel,
Y Mao,
L Masek,
H Masui,
F Matathias,
M McCumber,
P L McGaughey,
N Means,
B Meredith,
Y Miake,
P Mikes,
K Miki,
T E Miller,
A Milov,
S Mioduszewski,
M Mishra,
J T Mitchell,
M Mitrovski,
A K Mohanty,
Y Morino,
A Morreale,
D P Morrison,
T V Moukhanova,
D Mukhopadhyay,
J Murata,
S Nagamiya,
Y Nagata,
J L Nagle,
M Naglis,
M I Nagy,
I Nakagawa,
Y Nakamiya,
T Nakamura,
K Nakano,
J Newby,
M Nguyen,
T Niita,
B E Norman,
R Nouicer,
A S Nyanin,
E O'Brien,
S X Oda,
C A Ogilvie,
H Ohnishi,
H Okada,
K Okada,
M Oka,
O O Omiwade,
Y Onuki,
A Oskarsson,
M Ouchida,
K Ozawa,
R Pak,
D Pal,
A P T Palounek,
V Pantuev,
V Papavassiliou,
J Park,
W J Park,
S F Pate,
H Pei,
J-C Peng,
H Pereira,
V Peresedov,
D Yu Peressounko,
C Pinkenburg,
M L Purschke,
A K Purwar,
H Qu,
J Rak,
A Rakotozafindrabe,
I Ravinovich,
K F Read,
S Rembeczki,
M Reuter,
K Reygers,
V Riabov,
Y Riabov,
D Roach,
G Roche,
S D Rolnick,
A Romana,
M Rosati,
S S E Rosendahl,
P Rosnet,
P Rukoyatkin,
P Ruzicka,
V L Rykov,
B Sahlmueller,
N Saito,
T Sakaguchi,
S Sakai,
K Sakashita,
H Sakata,
V Samsonov,
S Sato,
T Sato,
S Sawada,
K Sedgwick,
J Seele,
R Seidl,
A Yu Semenov,
V Semenov,
R Seto,
D Sharma,
I Shein,
A Shevel,
T-A Shibata,
K Shigaki,
M Shimomura,
K Shoji,
P Shukla,
A Sickles,
C L Silva,
D Silvermyr,
C Silvestre,
K S Sim,
B K Singh,
C P Singh,
V Singh,
S Skutnik,
M Slunecka,
A Soldatov,
R A Soltz,
W E Sondheim,
S P Sorensen,
I V Sourikova,
F Staley,
P W Stankus,
E Stenlund,
M Stepanov,
A Ster,
S P Stoll,
T Sugitate,
C Suire,
A Sukhanov,
J Sziklai,
T Tabaru,
S Takagi,
E M Takagui,
A Taketani,
R Tanabe,
Y Tanaka,
K Tanida,
M J Tannenbaum,
A Taranenko,
P Tarján,
H Themann,
T L Thomas,
M Togawa,
A Toia,
J Tojo,
L Tomásek,
Y Tomita,
H Torii,
R S Towell,
V-N Tram,
I Tserruya,
Y Tsuchimoto,
C Vale,
H Valle,
H W van Hecke,
A Veicht,
J Velkovska,
R Vertesi,
A A Vinogradov,
M Virius,
V Vrba,
E Vznuzdaev,
M Wagner,
D Walker,
X R Wang,
Y Watanabe,
F Wei,
J Wessels,
S N White,
D Winter,
C L Woody,
M Wysocki,
W Xie,
Y L Yamaguchi,
K Yamaura,
R Yang,
A Yanovich,
Z Yasin,
J Ying,
S Yokkaichi,
G R Young,
I Younus,
I E Yushmanov,
W A Zajc,
O Zaudtke,
C Zhang,
S Zhou,
J Zimányi,
L Zolin
University of Colorado, Boulder, Colorado 80309, USA.
The momentum distribution of electrons from semileptonic decays of charm and bottom quarks for midrapidity |y|<0.35 in p+p collisions at square root of s=200 GeV is measured by the PHENIX experiment at the Relativistic Heavy Ion Collider over the transverse momentum range 2<pT<7 GeV/c. The ratio of the yield of electrons from bottom to that from charm is presented. The ratio is determined using partial D/D-->e(+/-)K(-/+)X (K unidentified) reconstruction. It is found that the yield of electrons from bottom becomes significant above 4 GeV/c in pT. A fixed-order-plus-next-to-leading-log perturbative quantum chromodynamics calculation agrees with the data within the theoretical and experimental uncertainties. The extracted total bottom production cross section at this energy is sigma(bb)=3.2(-1.1)(+1.2)(stat)(-1.3)(+1.4)(syst)mub.
A Adare,
S Afanasiev,
C Aidala,
N N Ajitanand,
Y Akiba,
H Al-Bataineh,
J Alexander,
K Aoki,
L Aphecetche,
J Asai,
E T Atomssa,
R Averbeck,
T C Awes,
B Azmoun,
V Babintsev,
M Bai,
G Baksay,
L Baksay,
A Baldisseri,
K N Barish,
P D Barnes,
B Bassalleck,
A T Basye,
S Bathe,
S Batsouli,
V Baublis,
C Baumann,
A Bazilevsky,
S Belikov,
R Bennett,
A Berdnikov,
Y Berdnikov,
A A Bickley,
J G Boissevain,
H Borel,
K Boyle,
M L Brooks,
H Buesching,
V Bumazhnov,
G Bunce,
S Butsyk,
C M Camacho,
S Campbell,
P Chand,
B S Chang,
W C Chang,
J-L Charvet,
S Chernichenko,
C Y Chi,
M Chiu,
I J Choi,
R K Choudhury,
T Chujo,
P Chung,
A Churyn,
V Cianciolo,
Z Citron,
B A Cole,
P Constantin,
M Csanád,
T Csörgo,
T Dahms,
S Dairaku,
K Das,
G David,
A Denisov,
D d'Enterria,
A Deshpande,
E J Desmond,
O Dietzsch,
A Dion,
M Donadelli,
O Drapier,
A Drees,
K A Drees,
A K Dubey,
A Durum,
D Dutta,
V Dzhordzhadze,
Y V Efremenko,
J Egdemir,
F Ellinghaus,
T Engelmore,
A Enokizono,
H En'yo,
S Esumi,
K O Eyser,
B Fadem,
D E Fields,
M Finger,
M Finger Jr,
F Fleuret,
S L Fokin,
Z Fraenkel,
J E Frantz,
A Franz,
A D Frawley,
K Fujiwara,
Y Fukao,
T Fusayasu,
I Garishvili,
A Glenn,
H Gong,
M Gonin,
J Gosset,
Y Goto,
R Granier de Cassagnac,
N Grau,
S V Greene,
M Grosse Perdekamp,
T Gunji,
H-A Gustafsson,
A Hadj Henni,
J S Haggerty,
H Hamagaki,
R Han,
E P Hartouni,
K Haruna,
E Haslum,
R Hayano,
M Heffner,
T K Hemmick,
T Hester,
X He,
J C Hill,
M Hohlmann,
W Holzmann,
K Homma,
B Hong,
T Horaguchi,
D Hornback,
S Huang,
T Ichihara,
R Ichimiya,
Y Ikeda,
K Imai,
J Imrek,
M Inaba,
D Isenhower,
M Ishihara,
T Isobe,
M Issah,
A Isupov,
D Ivanischev,
B V Jacak,
J Jia,
J Jin,
B M Johnson,
K S Joo,
D Jouan,
F Kajihara,
S Kametani,
N Kamihara,
J Kamin,
J H Kang,
J Kapustinsky,
D Kawall,
A V Kazantsev,
T Kempel,
A Khanzadeev,
K M Kijima,
J Kikuchi,
B I Kim,
D H Kim,
D J Kim,
E Kim,
S H Kim,
E Kinney,
K Kiriluk,
A Kiss,
E Kistenev,
J Klay,
C Klein-Boesing,
L Kochenda,
V Kochetkov,
B Komkov,
M Konno,
J Koster,
A Kozlov,
A Král,
A Kravitz,
G J Kunde,
K Kurita,
M Kurosawa,
M J Kweon,
Y Kwon,
G S Kyle,
R Lacey,
Y S Lai,
J G Lajoie,
D Layton,
A Lebedev,
D M Lee,
K B Lee,
T Lee,
M J Leitch,
M A L Leite,
B Lenzi,
P Liebing,
T Liska,
A Litvinenko,
H Liu,
M X Liu,
X Li,
B Love,
D Lynch,
C F Maguire,
Y I Makdisi,
A Malakhov,
M D Malik,
V I Manko,
E Mannel,
Y Mao,
L Masek,
H Masui,
F Matathias,
M McCumber,
P L McGaughey,
N Means,
B Meredith,
Y Miake,
P Mikes,
K Miki,
A Milov,
M Mishra,
J T Mitchell,
A K Mohanty,
Y Morino,
A Morreale,
D P Morrison,
T V Moukhanova,
D Mukhopadhyay,
J Murata,
S Nagamiya,
J L Nagle,
M Naglis,
M I Nagy,
I Nakagawa,
Y Nakamiya,
T Nakamura,
K Nakano,
J Newby,
M Nguyen,
T Niita,
R Nouicer,
A S Nyanin,
E O'Brien,
S X Oda,
C A Ogilvie,
H Okada,
K Okada,
M Oka,
Y Onuki,
A Oskarsson,
M Ouchida,
K Ozawa,
R Pak,
A P T Palounek,
V Pantuev,
V Papavassiliou,
J Park,
W J Park,
S F Pate,
H Pei,
J-C Peng,
H Pereira,
V Peresedov,
D Yu Peressounko,
C Pinkenburg,
M L Purschke,
A K Purwar,
H Qu,
J Rak,
A Rakotozafindrabe,
I Ravinovich,
K F Read,
S Rembeczki,
M Reuter,
K Reygers,
V Riabov,
Y Riabov,
D Roach,
G Roche,
S D Rolnick,
M Rosati,
S S E Rosendahl,
P Rosnet,
P Rukoyatkin,
P Ruzicka,
V L Rykov,
B Sahlmueller,
N Saito,
T Sakaguchi,
S Sakai,
K Sakashita,
V Samsonov,
T Sato,
S Sawada,
K Sedgwick,
J Seele,
R Seidl,
A Yu Semenov,
V Semenov,
R Seto,
D Sharma,
I Shein,
T-A Shibata,
K Shigaki,
M Shimomura,
K Shoji,
P Shukla,
A Sickles,
C L Silva,
D Silvermyr,
C Silvestre,
K S Sim,
B K Singh,
C P Singh,
V Singh,
M Slunecka,
A Soldatov,
R A Soltz,
W E Sondheim,
S P Sorensen,
I V Sourikova,
F Staley,
P W Stankus,
E Stenlund,
M Stepanov,
A Ster,
S P Stoll,
T Sugitate,
C Suire,
A Sukhanov,
J Sziklai,
E M Takagui,
A Taketani,
R Tanabe,
Y Tanaka,
S Taneja,
K Tanida,
M J Tannenbaum,
A Taranenko,
P Tarján,
H Themann,
T L Thomas,
M Togawa,
A Toia,
L Tomásek,
Y Tomita,
H Torii,
R S Towell,
V-N Tram,
I Tserruya,
Y Tsuchimoto,
C Vale,
H Valle,
H W van Hecke,
A Veicht,
J Velkovska,
R Vertesi,
A A Vinogradov,
M Virius,
V Vrba,
E Vznuzdaev,
D Walker,
X R Wang,
Y Watanabe,
F Wei,
J Wessels,
S N White,
S Williamson,
D Winter,
C L Woody,
M Wysocki,
W Xie,
Y L Yamaguchi,
K Yamaura,
R Yang,
A Yanovich,
J Ying,
S Yokkaichi,
G R Young,
I Younus,
I E Yushmanov,
W A Zajc,
O Zaudtke,
C Zhang,
S Zhou,
L Zolin
University of Colorado, Boulder, Colorado 80309, USA.
The double helicity asymmetry in neutral pion production for p_{T}=1 to 12 GeV/c was measured with the PHENIX experiment to access the gluon-spin contribution, DeltaG, to the proton spin. Measured asymmetries are consistent with zero, and at a theory scale of mu;{2}=4 GeV2 a next to leading order QCD analysis gives DeltaG;{[0.02,0.3]}=0.2, with a constraint of -0.7<DeltaG;{[0.02,0.3]}<0.5 at Deltachi;{2}=9 ( approximately 3sigma) for the sampled gluon momentum fraction (x) range, 0.02 to 0.3. The results are obtained using predictions for the measured asymmetries generated from four representative fits to polarized deep inelastic scattering data. We also consider the dependence of the DeltaG constraint on the choice of the theoretical scale, a dominant uncertainty in these predictions.
A Adare,
S Afanasiev,
C Aidala,
N N Ajitanand,
Y Akiba,
H Al-Bataineh,
J Alexander,
K Aoki,
L Aphecetche,
R Armendariz,
S H Aronson,
J Asai,
E T Atomssa,
R Averbeck,
T C Awes,
B Azmoun,
V Babintsev,
M Bai,
G Baksay,
L Baksay,
A Baldisseri,
K N Barish,
P D Barnes,
B Bassalleck,
A T Basye,
S Bathe,
S Batsouli,
V Baublis,
C Baumann,
A Bazilevsky,
S Belikov,
R Bennett,
A Berdnikov,
Y Berdnikov,
A A Bickley,
J G Boissevain,
H Borel,
K Boyle,
M L Brooks,
H Buesching,
V Bumazhnov,
G Bunce,
S Butsyk,
C M Camacho,
S Campbell,
B S Chang,
W C Chang,
J-L Charvet,
S Chernichenko,
J Chiba,
C Y Chi,
M Chiu,
I J Choi,
R K Choudhury,
T Chujo,
P Chung,
A Churyn,
V Cianciolo,
Z Citron,
C R Cleven,
B A Cole,
M P Comets,
P Constantin,
M Csanád,
T Csörgo,
T Dahms,
S Dairaku,
K Das,
G David,
M B Deaton,
K Dehmelt,
H Delagrange,
A Denisov,
D d'Enterria,
A Deshpande,
E J Desmond,
O Dietzsch,
A Dion,
M Donadelli,
O Drapier,
A Drees,
K A Drees,
A K Dubey,
A Durum,
D Dutta,
V Dzhordzhadze,
Y V Efremenko,
J Egdemir,
F Ellinghaus,
W S Emam,
T Engelmore,
A Enokizono,
H En'yo,
S Esumi,
K O Eyser,
B Fadem,
D E Fields,
M Finger Jr,
M Finger,
F Fleuret,
S L Fokin,
Z Fraenkel,
J E Frantz,
A Franz,
A D Frawley,
K Fujiwara,
Y Fukao,
T Fusayasu,
S Gadrat,
I Garishvili,
A Glenn,
H Gong,
M Gonin,
J Gosset,
Y Goto,
R Granier de Cassagnac,
N Grau,
S V Greene,
M Grosse Perdekamp,
T Gunji,
H-A Gustafsson,
T Hachiya,
A Hadj Henni,
C Haegemann,
J S Haggerty,
H Hamagaki,
R Han,
H Harada,
E P Hartouni,
K Haruna,
E Haslum,
R Hayano,
M Heffner,
T K Hemmick,
T Hester,
X He,
H Hiejima,
J C Hill,
R Hobbs,
M Hohlmann,
W Holzmann,
K Homma,
B Hong,
T Horaguchi,
D Hornback,
S Huang,
T Ichihara,
R Ichimiya,
Y Ikeda,
K Imai,
J Imrek,
M Inaba,
Y Inoue,
D Isenhower,
L Isenhower,
M Ishihara,
T Isobe,
M Issah,
A Isupov,
D Ivanischev,
B V Jacak,
J Jia,
J Jin,
O Jinnouchi,
B M Johnson,
K S Joo,
D Jouan,
F Kajihara,
S Kametani,
N Kamihara,
J Kamin,
M Kaneta,
J H Kang,
H Kanou,
J Kapustinsky,
D Kawall,
A V Kazantsev,
T Kempel,
A Khanzadeev,
K M Kijima,
J Kikuchi,
B I Kim,
D H Kim,
D J Kim,
E Kim,
S H Kim,
E Kinney,
K Kiriluk,
A Kiss,
E Kistenev,
A Kiyomichi,
J Klay,
C Klein-Boesing,
L Kochenda,
V Kochetkov,
B Komkov,
M Konno,
J Koster,
D Kotchetkov,
A Kozlov,
A Král,
A Kravitz,
J Kubart,
G J Kunde,
N Kurihara,
K Kurita,
M Kurosawa,
M J Kweon,
Y Kwon,
G S Kyle,
R Lacey,
Y-S Lai,
Y S Lai,
J G Lajoie,
D Layton,
A Lebedev,
D M Lee,
K B Lee,
M K Lee,
T Lee,
M J Leitch,
M A L Leite,
B Lenzi,
P Liebing,
T Liska,
A Litvinenko,
H Liu,
M X Liu,
X Li,
B Love,
D Lynch,
C F Maguire,
Y I Makdisi,
A Malakhov,
M D Malik,
V I Manko,
E Mannel,
Y Mao,
L Masek,
H Masui,
F Matathias,
M McCumber,
P L McGaughey,
N Means,
B Meredith,
Y Miake,
P Mikes,
K Miki,
T E Miller,
A Milov,
S Mioduszewski,
M Mishra,
J T Mitchell,
M Mitrovski,
A K Mohanty,
Y Morino,
A Morreale,
D P Morrison,
T V Moukhanova,
D Mukhopadhyay,
J Murata,
S Nagamiya,
Y Nagata,
J L Nagle,
M Naglis,
M I Nagy,
I Nakagawa,
Y Nakamiya,
T Nakamura,
K Nakano,
J Newby,
M Nguyen,
T Niita,
B E Norman,
R Nouicer,
A S Nyanin,
E O'Brien,
S X Oda,
C A Ogilvie,
H Ohnishi,
H Okada,
K Okada,
M Oka,
O O Omiwade,
Y Onuki,
A Oskarsson,
M Ouchida,
K Ozawa,
R Pak,
D Pal,
A P T Palounek,
V Pantuev,
V Papavassiliou,
J Park,
W J Park,
S F Pate,
H Pei,
J-C Peng,
H Pereira,
V Peresedov,
D Yu Peressounko,
C Pinkenburg,
M L Purschke,
A K Purwar,
H Qu,
J Rak,
A Rakotozafindrabe,
I Ravinovich,
K F Read,
S Rembeczki,
M Reuter,
K Reygers,
V Riabov,
Y Riabov,
D Roach,
G Roche,
S D Rolnick,
A Romana,
M Rosati,
S S E Rosendahl,
P Rosnet,
P Rukoyatkin,
P Ruzicka,
V L Rykov,
B Sahlmueller,
N Saito,
T Sakaguchi,
S Sakai,
K Sakashita,
H Sakata,
V Samsonov,
S Sato,
T Sato,
S Sawada,
K Sedgwick,
J Seele,
R Seidl,
A Yu Semenov,
V Semenov,
R Seto,
D Sharma,
I Shein,
A Shevel,
T-A Shibata,
K Shigaki,
M Shimomura,
K Shoji,
P Shukla,
A Sickles,
C L Silva,
D Silvermyr,
C Silvestre,
K S Sim,
B K Singh,
C P Singh,
V Singh,
S Skutnik,
M Slunecka,
A Soldatov,
R A Soltz,
W E Sondheim,
S P Sorensen,
I V Sourikova,
F Staley,
P W Stankus,
E Stenlund,
M Stepanov,
A Ster,
S P Stoll,
T Sugitate,
C Suire,
A Sukhanov,
J Sziklai,
T Tabaru,
S Takagi,
E M Takagui,
A Taketani,
R Tanabe,
Y Tanaka,
K Tanida,
M J Tannenbaum,
A Taranenko,
P Tarján,
H Themann,
T L Thomas,
M Togawa,
A Toia,
J Tojo,
L Tomásek,
Y Tomita,
H Torii,
R S Towell,
V-N Tram,
I Tserruya,
Y Tsuchimoto,
C Vale,
H Valle,
H W Vanhecke,
A Veicht,
J Velkovska,
R Vertesi,
A A Vinogradov,
M Virius,
V Vrba,
E Vznuzdaev,
M Wagner,
D Walker,
X R Wang,
Y Watanabe,
F Wei,
J Wessels,
S N White,
D Winter,
C L Woody,
M Wysocki,
W Xie,
Y L Yamaguchi,
K Yamaura,
R Yang,
A Yanovich,
Z Yasin,
J Ying,
S Yokkaichi,
G R Young,
I Younus,
I E Yushmanov,
W A Zajc,
O Zaudtke,
C Zhang,
S Zhou,
J Zimányi,
L Zolin
University of Colorado, Boulder, Colorado 80309, USA.
Neutral pion transverse momentum (p_{T}) spectra at midrapidity (|y| less, similar0.35) were measured in Cu+Cu collisions at sqrt[s_{NN}]=22.4, 62.4, and 200 GeV. Relative to pi;{0} yields in p+p collisions scaled by the number of inelastic nucleon-nucleon collisions (N_{coll}) the pi;{0} yields for p_{T} greater, similar2 GeV/c in central Cu+Cu collisions are suppressed at 62.4 and 200 GeV whereas an enhancement is observed at 22.4 GeV. A comparison with a jet-quenching model suggests that final state parton energy loss dominates in central Cu+Cu collisions at 62.4 and 200 GeV, while the enhancement at 22.4 GeV is consistent with nuclear modifications in the initial state alone.
S S Adler,
S Afanasiev,
C Aidala,
N N Ajitanand,
Y Akiba,
J Alexander,
R Amirikas,
L Aphecetche,
S H Aronson,
R Averbeck,
T C Awes,
R Azmoun,
V Babintsev,
A Baldisseri,
K N Barish,
P D Barnes,
B Bassalleck,
S Bathe,
S Batsouli,
V Baublis,
F Bauer,
A Bazilevsky,
S Belikov,
Y Berdnikov,
S Bhagavatula,
J G Boissevain,
H Borel,
S Borenstein,
M L Brooks,
D S Brown,
N Bruner,
D Bucher,
H Buesching,
V Bumazhnov,
G Bunce,
J M Burward-Hoy,
S Butsyk,
X Camard,
J-S Chai,
P Chand,
W C Chang,
S Chernichenko,
C Y Chi,
J Chiba,
M Chiu,
I J Choi,
J Choi,
R K Choudhury,
T Chujo,
V Cianciolo,
Y Cobigo,
B A Cole,
P Constantin,
D d'Enterria,
G David,
H Delagrange,
A Denisov,
A Deshpande,
E J Desmond,
A Devismes,
O Dietzsch,
O Drapier,
A Drees,
K A Drees,
R du Rietz,
A Durum,
D Dutta,
Y V Efremenko,
K El Chenawi,
A Enokizono,
H En'yo,
S Esumi,
L Ewell,
D E Fields,
F Fleuret,
S L Fokin,
B D Fox,
Z Fraenkel,
J E Frantz,
A Franz,
A D Frawley,
S-Y Fung,
S Garpman,
T K Ghosh,
A Glenn,
G Gogiberidze,
M Gonin,
J Gosset,
Y Goto,
R Granier de Cassagnac,
N Grau,
S V Greene,
M Grosse Perdekamp,
W Guryn,
H-A Gustafsson,
T Hachiya,
J S Haggerty,
H Hamagaki,
A G Hansen,
E P Hartouni,
M Harvey,
R Hayano,
N Hayashi,
X He,
M Heffner,
T K Hemmick,
J M Heuser,
M Hibino,
J C Hill,
W Holzmann,
K Homma,
B Hong,
A Hoover,
T Ichihara,
V V Ikonnikov,
K Imai,
D Isenhower,
M Ishihara,
M Issah,
A Isupov,
B V Jacak,
W Y Jang,
Y Jeong,
J Jia,
O Jinnouchi,
B M Johnson,
S C Johnson,
K S Joo,
D Jouan,
S Kametani,
N Kamihara,
J H Kang,
S S Kapoor,
K Katou,
S Kelly,
B Khachaturov,
A Khanzadeev,
J Kikuchi,
D H Kim,
D J Kim,
D W Kim,
E Kim,
G-B Kim,
H J Kim,
E Kistenev,
A Kiyomichi,
K Kiyoyama,
C Klein-Boesing,
H Kobayashi,
L Kochenda,
V Kochetkov,
D Koehler,
T Kohama,
M Kopytine,
D Kotchetkov,
A Kozlov,
P J Kroon,
C H Kuberg,
K Kurita,
Y Kuroki,
M J Kweon,
Y Kwon,
G S Kyle,
R Lacey,
V Ladygin,
J G Lajoie,
A Lebedev,
S Leckey,
D M Lee,
S Lee,
M J Leitch,
X H Li,
H Lim,
A Litvinenko,
M X Liu,
Y Liu,
C F Maguire,
Y I Makdisi,
A Malakhov,
V I Manko,
Y Mao,
G Martinez,
M D Marx,
H Masui,
F Matathias,
T Matsumoto,
P L McGaughey,
E Melnikov,
F Messer,
Y Miake,
J Milan,
T E Miller,
A Milov,
S Mioduszewski,
R E Mischke,
G C Mishra,
J T Mitchell,
A K Mohanty,
D P Morrison,
J M Moss,
F Mühlbacher,
D Mukhopadhyay,
M Muniruzzaman,
J Murata,
S Nagamiya,
J L Nagle,
T Nakamura,
B K Nandi,
M Nara,
J Newby,
P Nilsson,
A S Nyanin,
J Nystrand,
E O'Brien,
C A Ogilvie,
H Ohnishi,
I D Ojha,
K Okada,
M Ono,
V Onuchin,
A Oskarsson,
I Otterlund,
K Oyama,
K Ozawa,
D Pal,
A P T Palounek,
V Pantuev,
V Papavassiliou,
J Park,
A Parmar,
S F Pate,
T Peitzmann,
J-C Peng,
V Peresedov,
C Pinkenburg,
R P Pisani,
F Plasil,
M L Purschke,
A K Purwar,
J Rak,
I Ravinovich,
K F Read,
M Reuter,
K Reygers,
V Riabov,
Y Riabov,
G Roche,
A Romana,
M Rosati,
P Rosnet,
S S Ryu,
M E Sadler,
N Saito,
T Sakaguchi,
M Sakai,
S Sakai,
V Samsonov,
L Sanfratello,
R Santo,
H D Sato,
S Sato,
S Sawada,
Y Schutz,
V Semenov,
R Seto,
M R Shaw,
T K Shea,
T-A Shibata,
K Shigaki,
T Shiina,
C L Silva,
D Silvermyr,
K S Sim,
C P Singh,
V Singh,
M Sivertz,
A Soldatov,
R A Soltz,
W E Sondheim,
S P Sorensen,
I V Sourikova,
F Staley,
P W Stankus,
E Stenlund,
M Stepanov,
A Ster,
S P Stoll,
T Sugitate,
J P Sullivan,
E M Takagui,
A Taketani,
M Tamai,
K H Tanaka,
Y Tanaka,
K Tanida,
M J Tannenbaum,
P Tarján,
J D Tepe,
T L Thomas,
J Tojo,
H Torii,
R S Towell,
I Tserruya,
H Tsuruoka,
S K Tuli,
H Tydesjö,
N Tyurin,
H W van Hecke,
J Velkovska,
M Velkovsky,
V Veszprémi,
L Villatte,
A A Vinogradov,
M A Volkov,
E Vznuzdaev,
X R Wang,
Y Watanabe,
S N White,
F K Wohn,
C L Woody,
W Xie,
Y Yang,
A Yanovich,
S Yokkaichi,
G R Young,
I E Yushmanov,
W A Zajc,
C Zhang,
S Zhou,
S J Zhou,
L Zolin
Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
Transverse single-spin asymmetries to probe the transverse-spin structure of the proton have been measured for neutral pions and nonidentified charged hadrons from polarized proton-proton collisions at midrapidity and square root(s)= 200 GeV. The data cover a transverse momentum (pT) range 1.0-5.0 GeV/c for neutral pions and 0.5-5.0 GeV/c for charged hadrons, at a Feynman-x value of approximately zero. The asymmetries seen in this previously unexplored kinematic region are consistent with zero within errors of a few percent. In addition, the inclusive charged hadron cross section at midrapidity from 0.5 < pT < 7.0 GeV/c is presented and compared to next-to-leading order perturbative QCD (pQCD) calculations. Successful description of the unpolarized cross section above approximately 2 GeV/c suggests that pQCD is applicable in the interpretation of the asymmetry results in the relevant kinematic range.
S S Adler,
S Afanasiev,
C Aidala,
N N Ajitanand,
Y Akiba,
A Al-Jamel,
J Alexander,
R Amirikas,
K Aoki,
L Aphecetche,
R Armendariz,
S H Aronson,
R Averbeck,
T C Awes,
B Azmoun,
R Azmoun,
V Babintsev,
A Baldisseri,
K N Barish,
P D Barnes,
B Bassalleck,
S Bathe,
S Batsouli,
V Baublis,
F Bauer,
A Bazilevsky,
S Belikov,
R Bennett,
Y Berdnikov,
S Bhagavatula,
M T Bjorndal,
J G Boissevain,
H Borel,
S Borenstein,
K Boyle,
M L Brooks,
D S Brown,
N Bruner,
D Bucher,
H Buesching,
V Bumazhnov,
G Bunce,
J M Burward-Hoy,
S Butsyk,
X Camard,
S Campbell,
J-S Chai,
P Chand,
W C Chang,
S Chernichenko,
C Y Chi,
J Chiba,
M Chiu,
I J Choi,
J Choi,
R K Choudhury,
T Chujo,
V Cianciolo,
C R Cleven,
Y Cobigo,
B A Cole,
M P Comets,
P Constantin,
M Csanád,
T Csörgo,
D d'Enterria,
T Dahms,
K Das,
G David,
H Delagrange,
A Denisov,
A Deshpande,
E J Desmond,
A Devismes,
O Dietzsch,
A Dion,
J L Drachenberg,
O Drapier,
A Drees,
K A Drees,
A K Dubey,
R du Rietz,
A Durum,
D Dutta,
V Dzhordzhadze,
Y V Efremenko,
J Egdemir,
K El Chenawi,
A Enokizono,
H En'yo,
B Espagnon,
S Esumi,
L Ewell,
D E Fields,
F Fleuret,
S L Fokin,
B Forestier,
B D Fox,
Z Fraenkel,
J E Frantz,
A Franz,
A D Frawley,
Y Fukao,
S-Y Fung,
S Gadrat,
S Garpman,
F Gastineau,
M Germain,
T K Ghosh,
A Glenn,
G Gogiberidze,
M Gonin,
J Gosset,
Y Goto,
R Granier de Cassagnac,
N Grau,
S V Greene,
M Grosse Perdekamp,
T Gunji,
W Guryn,
H-A Gustafsson,
T Hachiya,
A Hadj Henni,
J S Haggerty,
M N Hagiwara,
H Hamagaki,
A G Hansen,
H Harada,
E P Hartouni,
K Haruna,
M Harvey,
E Haslum,
K Hasuko,
R Hayano,
N Hayashi,
X He,
M Heffner,
T K Hemmick,
J M Heuser,
M Hibino,
H Hiejima,
J C Hill,
R Hobbs,
M Holmes,
W Holzmann,
K Homma,
B Hong,
A Hoover,
T Horaguchi,
H M Hur,
T Ichihara,
V V Ikonnikov,
K Imai,
M Inaba,
D Isenhower,
L Isenhower,
M Ishihara,
T Isobe,
M Issah,
A Isupov,
B V Jacak,
W Y Jang,
Y Jeong,
J Jia,
J Jin,
O Jinnouchi,
B M Johnson,
S C Johnson,
K S Joo,
D Jouan,
F Kajihara,
S Kametani,
N Kamihara,
M Kaneta,
J H Kang,
S S Kapoor,
K Katou,
T Kawagishi,
A V Kazantsev,
S Kelly,
B Khachaturov,
A Khanzadeev,
J Kikuchi,
D H Kim,
D J Kim,
D W Kim,
E Kim,
G-B Kim,
H J Kim,
Y-S Kim,
E Kinney,
W W Kinnison,
A Kiss,
E Kistenev,
A Kiyomichi,
K Kiyoyama,
C Klein-Boesing,
H Kobayashi,
L Kochenda,
V Kochetkov,
D Koehler,
T Kohama,
B Komkov,
M Konno,
M Kopytine,
D Kotchetkov,
A Kozlov,
P J Kroon,
C H Kuberg,
G J Kunde,
N Kurihara,
K Kurita,
Y Kuroki,
M J Kweon,
Y Kwon,
G S Kyle,
R Lacey,
V Ladygin,
J G Lajoie,
Y Le Bornec,
A Lebedev,
S Leckey,
D M Lee,
M K Lee,
S Lee,
M J Leitch,
M A L Leite,
X H Li,
H Lim,
A Litvinenko,
M X Liu,
Y Liu,
C F Maguire,
Y I Makdisi,
A Malakhov,
M D Malik,
V I Manko,
Y Mao,
G Martinez,
M D Marx,
H Masui,
F Matathias,
T Matsumoto,
M C McCain,
P L McGaughey,
E Melnikov,
F Messer,
Y Miake,
J Milan,
T E Miller,
A Milov,
S Mioduszewski,
R E Mischke,
G C Mishra,
J T Mitchell,
A K Mohanty,
D P Morrison,
J M Moss,
T V Moukhanova,
F Mühlbacher,
D Mukhopadhyay,
M Muniruzzaman,
J Murata,
S Nagamiya,
Y Nagata,
J L Nagle,
M Naglis,
T Nakamura,
B K Nandi,
M Nara,
J Newby,
M Nguyen,
P Nilsson,
B Norman,
A S Nyanin,
J Nystrand,
E O'Brien,
C A Ogilvie,
H Ohnishi,
I D Ojha,
H Okada,
K Okada,
O O Omiwade,
M Ono,
V Onuchin,
A Oskarsson,
I Otterlund,
K Oyama,
K Ozawa,
D Pal,
A P T Palounek,
V Pantuev,
V Papavassiliou,
J Park,
W J Park,
A Parmar,
S F Pate,
H Pei,
T Peitzmann,
J-C Peng,
H Pereira,
V Peresedov,
D Yu Peressounko,
C Pinkenburg,
R P Pisani,
F Plasil,
M L Purschke,
A K Purwar,
H Qu,
J Rak,
I Ravinovich,
K F Read,
M Reuter,
K Reygers,
V Riabov,
Y Riabov,
G Roche,
A Romana,
M Rosati,
S S E Rosendahl,
P Rosnet,
P Rukoyatkin,
V L Rykov,
S S Ryu,
M E Sadler,
B Sahlmueller,
N Saito,
T Sakaguchi,
M Sakai,
S Sakai,
V Samsonov,
L Sanfratello,
R Santo,
H D Sato,
S Sato,
S Sawada,
Y Schutz,
V Semenov,
R Seto,
D Sharma,
M R Shaw,
T K Shea,
I Shein,
T-A Shibata,
K Shigaki,
T Shiina,
M Shimomura,
T Shohjoh,
K Shoji,
A Sickles,
C L Silva,
D Silvermyr,
K S Sim,
J Simon-Gillo,
C P Singh,
V Singh,
M Sivertz,
S Skutnik,
W C Smith,
A Soldatov,
R A Soltz,
W E Sondheim,
S P Sorensen,
I V Sourikova,
F Staley,
P W Stankus,
E Stenlund,
M Stepanov,
A Ster,
S P Stoll,
T Sugitate,
C Suire,
J P Sullivan,
J Sziklai,
T Tabaru,
S Takagi,
E M Takagui,
A Taketani,
M Tamai,
K H Tanaka,
Y Tanaka,
K Tanida,
M J Tannenbaum,
A Taranenko,
P Tarján,
J D Tepe,
T L Thomas,
M Togawa,
J Tojo,
H Torii,
R S Towell,
V-N Tram,
I Tserruya,
Y Tsuchimoto,
H Tsuruoka,
S K Tuli,
H Tydesjö,
N Tyurin,
H Valle,
H W van Hecke,
J Velkovska,
M Velkovsky,
R Vertesi,
V Veszprémi,
L Villatte,
A A Vinogradov,
M A Volkov,
E Vznuzdaev,
M Wagner,
X R Wang,
Y Watanabe,
J Wessels,
S N White,
N Willis,
D Winter,
F K Wohn,
C L Woody,
M Wysocki,
W Xie,
Y Yang,
A Yanovich,
S Yokkaichi,
G R Young,
I Younus,
I E Yushmanov,
W A Zajc,
O Zaudkte,
C Zhang,
S Zhou,
S J Zhou,
J Zimányi,
L Zolin
Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
New measurements are presented for charged hadron azimuthal correlations at midrapidity in Au+Au collisions at (square root)s(NN)= 62.4 and 200 GeV. They are compared to earlier measurements obtained at (square root)s(NN)= 130 GeV and in Pb + Pb collisions at (square root)s(NN)= 17.2 GeV. Sizeable anisotropies are observed with centrality and transverse momentum (pT) dependence characteristic of elliptic flow (upsilon2). For a broad range of centralities, the observed magnitudes and trends of the differential anisotropy, upsilon2(pT), change very little over the collision energy range (square root)s(NN)= 62-200 GeV, indicating saturation of the excitation function for upsilon2 at these energies. Such a saturation may be indicative of the dominance of a very soft equation of state for (square root)s(NN) approximately 60-200 GeV.
S S Adler,
S Afanasiev,
C Aidala,
N N Ajitanand,
Y Akiba,
J Alexander,
R Amirikas,
L Aphecetche,
S H Aronson,
R Averbeck,
T C Awes,
R Azmoun,
V Babintsev,
A Baldisseri,
K N Barish,
P D Barnes,
B Bassalleck,
S Bathe,
S Batsouli,
V Baublis,
A Bazilevsky,
S Belikov,
Y Berdnikov,
S Bhagavatula,
J G Boissevain,
H Borel,
S Borenstein,
M L Brooks,
D S Brown,
N Bruner,
D Bucher,
H Buesching,
V Bumazhnov,
G Bunce,
J M Burward-Hoy,
S Butsyk,
X Camard,
J-S Chai,
P Chand,
W C Chang,
S Chernichenko,
C Y Chi,
J Chiba,
M Chiu,
I J Choi,
J Choi,
R K Choudhury,
T Chujo,
V Cianciolo,
Y Cobigo,
B A Cole,
P Constantin,
D G D'Enterria,
G David,
H Delagrange,
A Denisov,
A Deshpande,
E J Desmond,
O Dietzsch,
O Drapier,
A Drees,
K A Drees,
R Du Rietz,
A Durum,
D Dutta,
Y V Efremenko,
K El Chenawi,
A Enokizono,
H En'yo,
S Esumi,
L Ewell,
D E Fields,
F Fleuret,
S L Fokin,
B D Fox,
Z Fraenkel,
J E Frantz,
A Franz,
A D Frawley,
S-Y Fung,
S Garpman,
T K Ghosh,
A Glenn,
G Gogiberidze,
M Gonin,
J Gosset,
Y Goto,
R Granier De Cassagnac,
N Grau,
S V Greene,
M Grosse Perdekamp,
W Guryn,
H-A Gustafsson,
T Hachiya,
J S Haggerty,
H Hamagaki,
A G Hansen,
E P Hartouni,
M Harvey,
R Hayano,
X He,
M Heffner,
T K Hemmick,
J M Heuser,
M Hibino,
J C Hill,
W Holzmann,
K Homma,
B Hong,
A Hoover,
T Ichihara,
V V Ikonnikov,
K Imai,
D Isenhower,
M Ishihara,
M Issah,
A Isupov,
B V Jacak,
W Y Jang,
Y Jeong,
J Jia,
O Jinnouchi,
B M Johnson,
S C Johnson,
K S Joo,
D Jouan,
S Kametani,
N Kamihara,
J H Kang,
S S Kapoor,
K Katou,
S Kelly,
B Khachaturov,
A Khanzadeev,
J Kikuchi,
D H Kim,
D J Kim,
D W Kim,
E Kim,
G-B Kim,
H J Kim,
E Kistenev,
A Kiyomichi,
K Kiyoyama,
C Klein-Boesing,
H Kobayashi,
L Kochenda,
V Kochetkov,
D Koehler,
T Kohama,
M Kopytine,
D Kotchetkov,
A Kozlov,
P J Kroon,
C H Kuberg,
K Kurita,
Y Kuroki,
M J Kweon,
Y Kwon,
G S Kyle,
R Lacey,
V Ladygin,
J G Lajoie,
A Lebedev,
S Leckey,
D M Lee,
S Lee,
M J Leitch,
X H Li,
H Lim,
A Litvinenko,
M X Liu,
Y Liu,
C F Maguire,
Y I Makdisi,
A Malakhov,
V I Manko,
Y Mao,
G Martinez,
M D Marx,
H Masui,
F Matathias,
T Matsumoto,
P L McGaughey,
E Melnikov,
F Messer,
Y Miake,
J Milan,
T E Miller,
A Milov,
S Mioduszewski,
R E Mischke,
G C Mishra,
J T Mitchell,
A K Mohanty,
D P Morrison,
J M Moss,
F Mühlbacher,
D Mukhopadhyay,
M Muniruzzaman,
J Murata,
S Nagamiya,
J L Nagle,
T Nakamura,
B K Nandi,
M Nara,
J Newby,
P Nilsson,
A S Nyanin,
J Nystrand,
E O'Brien,
C A Ogilvie,
H Ohnishi,
I D Ojha,
K Okada,
M Ono,
V Onuchin,
A Oskarsson,
I Otterlund,
K Oyama,
K Ozawa,
D Pal,
A P T Palounek,
V S Pantuev,
V Papavassiliou,
J Park,
A Parmar,
S F Pate,
T Peitzmann,
J-C Peng,
V Peresedov,
C Pinkenburg,
R P Pisani,
F Plasil,
M L Purschke,
A K Purwar,
J Rak,
I Ravinovich,
K F Read,
M Reuter,
K Reygers,
V Riabov,
Y Riabov,
G Roche,
A Romana,
M Rosati,
P Rosnet,
S S Ryu,
M E Sadler,
N Saito,
T Sakaguchi,
M Sakai,
S Sakai,
V Samsonov,
L Sanfratello,
R Santo,
H D Sato,
S Sato,
S Sawada,
Y Schutz,
V Semenov,
R Seto,
M R Shaw,
T K Shea,
T-A Shibata,
K Shigaki,
T Shiina,
C L Silva,
D Silvermyr,
K S Sim,
C P Singh,
V Singh,
M Sivertz,
A Soldatov,
R A Soltz,
W E Sondheim,
S P Sorensen,
I V Sourikova,
F Staley,
P W Stankus,
E Stenlund,
M Stepanov,
A Ster,
S P Stoll,
T Sugitate,
J P Sullivan,
E M Takagui,
A Taketani,
M Tamai,
K H Tanaka,
Y Tanaka,
K Tanida,
M J Tannenbaum,
P Tarján,
J D Tepe,
T L Thomas,
J Tojo,
H Torii,
R S Towell,
I Tserruya,
H Tsuruoka,
S K Tuli,
H Tydesjö,
N Tyurin,
H W Van Hecke,
J Velkovska,
M Velkovsky,
L Villatte,
A A Vinogradov,
M A Volkov,
E Vznuzdaev,
X R Wang,
Y Watanabe,
S N White,
F K Wohn,
C L Woody,
W Xie,
Y Yang,
A Yanovich,
S Yokkaichi,
G R Young,
I E Yushmanov,
W A Zajc,
C Zhang,
S Zhou,
S J Zhou,
L Zolin
Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
J/psi production has been measured in proton-proton collisions at sqrt[s]=200 GeV over a wide rapidity and transverse momentum range by the PHENIX experiment at the Relativistic Heavy Ion Collider. Distributions of the rapidity and transverse momentum, along with measurements of the mean transverse momentum and total production cross section are presented and compared to available theoretical calculations. The total J/psi cross section is 4.0+/-0.6(stat)+/-0.6(syst)+/-0.4(abs) microb. The mean transverse momentum is 1.80+/-0.23(stat)+/-0.16(syst) GeV/c.
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