Open AccessRapidity and species dependence of particle production at largetransverse momentum for d+Au collisions at psNN = 200 GeV
Author(s) -
B. I. Abelev,
J. R. Adams,
M. M. Aggarwal,
Z. Ahammed,
J. Amonett,
B.D. Anderson,
M. Anderson,
D. Arkhipkin,
G. S. Averichev,
Y. Bai,
J. Balewski,
O. Barannikova,
L.S. Barnby,
J. Baudot,
S. Bekele,
V. V. Belaga,
A. Bellingeri-Laurikainen,
R. Bellwied,
F. Benedosso,
S. Bhardwaj,
A. Bhasin,
A. K. Bhati,
H. Bichsel,
J. Bielčík,
J. Bielčíková,
L. C. Bland,
S. Blyth,
B. E. Bonner,
M. Botje,
J. Bouchet,
A. V. Brandin,
A. Bravar,
M. Bysterský,
R. V. Cadman,
X. Z. Cai,
H. Caines,
M. Calderon de la Barca Sanchez,
J. Castillo,
O. Catu,
D. Cebra,
Z. Chajęcki,
P. Chaloupka,
S. Chattopadhyay,
H.F. Chen,
J.H. Chen,
J. Cheng,
M. Cherney,
A. Chikanian,
W. Christie,
J. P. Coffin,
T. M. Cormier,
M. R. Cosentino,
J. G. Cramer,
H. J. Crawford,
Dipankar Das,
S. Das,
M. Daugherity,
M. M. de Moura,
Т. Г. Дедович,
M. Dephillips,
A. A. Derevschikov,
L. Didenko,
T. Dietel,
P. Djawotho,
S. Dogra,
W. J. Dong,
X. Dong,
J. E. Draper,
F. Du,
V.B. Dunin,
J. C. Dunlop,
M. R. Dutta Mazumdar,
V. Eckardt,
W.R. Edwards,
L. G. Efimov,
В. Емелянов,
J. Engelage,
G. Eppley,
B. Erazmus,
M. Estienne,
P. Fachini,
R. Fatemi,
J. Fedorišin,
K. Filimonov,
P. Filip,
E. Finch,
V. Fine,
Y. Fisyak,
Jiang Fu,
C. A. Gagliardi,
L. Gaillard,
Ganti,
V. Ghazikhanian,
P. Ghosh,
J. Gonzalez,
Y. G. Gorbunov,
H. Gos,
O. G. Grebenyuk,
D. Grosnick,
S. M. Guertin,
K. S.F.F. Guimaraes,
Yuanyuan Guo,
N. Gupta,
T. D. Gutierrez,
B. Haag,
T. J. Hallman,
A. Hamed,
J. W. Harris,
W. He,
M. Heinz,
T.W. Henry,
S. Hepplemann,
B. Hippolyte,
A. Hirsch,
E. Hjort,
A. M. Hoffman,
G. W. Hoffmann,
M. J. Horner,
H. Z. Huang,
S. Huang,
E. W. Hughes,
T. J. Humanic,
G. Igo,
P. Jacobs,
W. W. Jacobs,
P. Jakl,
Fei Jia,
H. Jiang,
P. Jones,
E. G. Judd,
S. Kabana,
Kyungsik Kang,
J. Kapitan,
M. Kaplan,
D. Keane,
A. Kechechyan,
V. Yu Khodyrev,
B.C. Kim,
J. Kiryluk,
A. Kisiel,
E. M. Kislov,
S. R. Klein,
A. Kocoloski,
D. D. Koetke,
T. Kollegger,
M. Kopytin,
L. Kotchenda,
V. Kouchpil,
K. Kowalik,
Martin Krämer,
П. Кравцов,
V. I. Kravtsov,
K. Krueger,
C. Kuhn,
А. И. Куликов,
Arun Kumar,
A.A. Kuznetsov,
M.A.C. Lamong,
J. M. Landgraf,
S. Lange,
S. LaPointe,
F. Laue,
J. Lauret,
A. Lebedev,
R. Lednický,
C.-H. Lee,
S. Lehocká,
M. J. LeVine,
C. Li,
Q. Li,
Y. Li,
G. Lin,
X. Lin,
S.J. Lindenbaum,
; Lisa,
f. Liu,
H. Liu,
J. Liu,
L. Liu,
Z. Liu,
T. Ljubičić,
W. J. Llope,
H. Long,
R.S. Longarche,
M. Lopez-Noriega,
W.A. Love,
Y. S. Lu,
T. Ludlam,
D. Lynn,
Guoliang Ma,
J. Ma,
Yan-Qing Ma,
D. Magestro,
D. P. Mahapatra,
R. Majka,
L. K. Mangotra,
R. Manweiler,
S. Margetis,
C. Markert,
L. M. Garcia Martin,
H. S. Matis,
Yu. A. Matulenko,
C. J. McClain,
T. S. McShane,
Yu Melnick,
A. Meschanin,
J. Millane,
M.L. Miller,
N. G. Minaev,
S. Mioduszewski,
C. Mironov,
A. Mischke,
D. Mishra,
J. T. Mitchell,
B. Mohanty,
L. Molnár,
C. Fred Moore,
D. A. Morozov,
M. G. Munhoz,
B. K. Nandi,
C. Nattrass,
T. K. Nayak,
J. M. Nelson,
P.K. Netrakanti,
V.A. Nikitin,
L. V. Nogach,
S. B. Nurushev,
G. Odyniec,
Akira Ogawa,
В. А. Окороков,
M. Oldenburg,
D. Olson,
M. Pachr,
Sitaram Pal,
Y. Panebratsev,
S.Y. Panitkin,
A.I. Pavlinov,
T. Pawlak,
T. Peitzmann,
V. Perevoztchikov,
C. Perkins,
W. Peryt,
V. Petrov,
S. C. Phatak,
R. Picha,
M. Planinić,
J. Pluta,
N. Poljak,
N. Porile,
J. Porter,
A. M. Poskanzer,
M. Potekhin,
E. Potrebenikov,
B. Potukuchi,
D. Prindle,
C. A. Pruneau,
J. Putschke,
G. Rakness,
R. Raniwala,
S. Raniwala,
R. L. Ray,
С.В. Разин,
J. Reinnarth,
D. Relyea,
F. Retière,
A. Ridiger,
H.G. Ritter,
J.B. Roberts,
O. V. Rogachevskiy,
J. L. Romero,
A. Rose,
C. Roy,
L. Ruan,
M. J. Russcher,
R. Sahoo,
T. Sakuma,
S. Salur,
J. Sandweiss,
M. Sarsour,
P. S. Sazhin,
J. Schambach,
R. P. Scharenberg,
N. Schmitz,
K. Schweda,
J. Seger,
I. Selyuzhenkov,
P. Seyboth,
A. Shabetai,
E. Shahaliev,
M. Shao,
M. Sharma,
W. Q. Shen,
S. S. Shimanskiy,
E. P. Sichtermann,
F. Simon,
R. Singaraju,
N. Smirnov,
R.J.M. Snellings,
G. Sood,
P. Sorensen,
J. Sowiński,
J. Speltz,
H. M. Spinka,
B. Srivastava,
A. Stadnik,
T. D. S. Stanislaus,
R. Stock,
A. Stolpovsky,
M. Strikhanov,
B. Stringfellow,
A. A. P. Suaide,
E. Sugarbaker,
M. Šumbera,
Zhenfan Sun,
B. Surrow,
M. Swager,
T. J. M. Symons,
A. Szanto de Toledo,
An Tai,
J. Takahaski,
A. H. Tang,
T. Tarnowsky,
D. Thein,
J. H. Thomas,
A. R. Timmins,
С. Тимошенко,
M. Tokarev,
T. A. Trainor,
S. Trentalange,
R. E. Tribble,
O. D. Tsai,
J. Ulery,
T. Ullrich,
D. G. Underwood,
G. Van Buren,
N. van der Kolk,
M. van Leeuwen,
A. M. Vander Molen,
R. Varma,
I. M. Vasilevski,
A. N. Vasiliev,
R. Vernet,
S.E. Vigdor,
Y. P. Viyogi,
S. Vokál,
S. A. Voloshin,
W. T. Waggoner,
F. Wang,
G. Wang,
J.S. Wang,
X.L. Wang,
Y. Wang,
J. W. Watson,
J. C. Webb,
G. D. Westfall,
A. Wetzler,
C. Whitten,
H. Wieman,
S. W. Wissink,
R. Witt,
J. Wood,
J. H. Wu,
N. Xu,
Qiao Xu,
Z. Xu,
P. Yepes,
I. K. Yoo,
V.I. Yurevich,
W. Zhan,
H. Zhang,
W.M. Zhang,
Y. Zhang,
Z.P. Zhang,
Y. Zhao,
C. Zhong,
R. Zoulkarneev,
Y. Zoulkarneeva,
A. N. Zubarev,
J. X. Zuo
Publication year - 2006
Language(s) - English
Resource type - Reports
DOI - 10.2172/902461
Subject(s) - rapidity , physics , nuclear physics , pion , hadron , particle physics , parton , asymmetry , gluon , proton , charged particle , quark , ion , quantum mechanics
We determine rapidity asymmetry in the production of charged pions, protons and anti-protons for large transverse momentum (p{sub T}) for d+Au collisions at {radical}s{sub NN} = 200 GeV. The rapidity asymmetry is defined as the ratio of particle yields at backward rapidity (Au beam direction or -ve rapidity) to those at forward rapidity (d beam direction or +ve rapidity). The identified hadrons are measured in the rapidity regions |y| < 0.5 and 0.5 < |y| < 1.0 for the p{sub T} range 2.5 < p{sub T} < 10 GeV/c. We observe significant rapidity asymmetry for charged pion and proton+anti-proton production in both rapidity regions. The asymmetry is larger for 0.5 < |y| < 1.0 than for |y| < 0.5 and is almost independent of particle type. The measurements are compared to various model predictions employing multiple scattering, energy loss, nuclear shadowing, saturation effects, and recombination, and also to a phenomenological parton model. We find that asymmetries are sensitive to model parameters and show model-preference. The rapidity dependence of {pi}{sup -}/{pi}{sup +} and {bar p}/p ratios in peripheral d+Au and forward neutron-tagged events are used to study the contributions of valence quarks and gluons to particle production at high p{sub T}. The results are compared to calculations based on NLO pQCD and other measurements of quark fragmentation functions