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Cold-nuclear-matter effects on heavy-quark production at forward and backward rapidity in d + Au collisions at √sNN = 200 GeV.
Adare, A; Aidala, C; Ajitanand, N N; Akiba, Y; Akimoto, R; Al-Bataineh, H; Al-Ta'ani, H; Alexander, J; Andrews, K R; Angerami, A; Aoki, K; Apadula, N; Appelt, E; Aramaki, Y; Armendariz, R; Aschenauer, E C; Atomssa, E T; Averbeck, R; Awes, T C; Azmoun, B; Babintsev, V; Bai, M; Baksay, G; Baksay, L; Bannier, B; Barish, K N; Bassalleck, B; Basye, A T; Bathe, S; Baublis, V; Baumann, C; Bazilevsky, A; Belikov, S; Belmont, R; Ben-Benjamin, J; Bennett, R; Bhom, J H; Blau, D S; Bok, J S; Boyle, K; Brooks, M L; Broxmeyer, D; Buesching, H; Bumazhnov, V; Bunce, G; Butsyk, S; Campbell, S; Caringi, A; Castera, P; Chen, C-H.
Afiliação
  • Adare A; University of Colorado, Boulder, Colorado 80309, USA.
  • Aidala C; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA and Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003-9337, USA and Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1040, USA.
  • Ajitanand NN; Chemistry Department, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA.
  • Akiba Y; RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan and RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  • Akimoto R; Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan.
  • Al-Bataineh H; New Mexico State University, Las Cruces, New Mexico 88003, USA.
  • Al-Ta'ani H; New Mexico State University, Las Cruces, New Mexico 88003, USA.
  • Alexander J; Chemistry Department, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA.
  • Andrews KR; Abilene Christian University, Abilene, Texas 79699, USA.
  • Angerami A; Columbia University, New York, New York 10027 and Nevis Laboratories, Irvington, New York 10533, USA.
  • Aoki K; Kyoto University, Kyoto 606-8502, Japan and RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan.
  • Apadula N; Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA.
  • Appelt E; Vanderbilt University, Nashville, Tennessee 37235, USA.
  • Aramaki Y; Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan and RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan.
  • Armendariz R; University of California-Riverside, Riverside, California 92521, USA.
  • Aschenauer EC; Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  • Atomssa ET; Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS-IN2P3, Route de Saclay, F-91128 Palaiseau, France.
  • Averbeck R; Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA.
  • Awes TC; Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA.
  • Azmoun B; Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  • Babintsev V; IHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino 142281, Russia.
  • Bai M; Collider-Accelerator Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  • Baksay G; Florida Institute of Technology, Melbourne, Florida 32901, USA.
  • Baksay L; Florida Institute of Technology, Melbourne, Florida 32901, USA.
  • Bannier B; Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA.
  • Barish KN; University of California-Riverside, Riverside, California 92521, USA.
  • Bassalleck B; University of New Mexico, Albuquerque, New Mexico 87131, USA.
  • Basye AT; Abilene Christian University, Abilene, Texas 79699, USA.
  • Bathe S; Baruch College, City University of New York, New York, New York 10010, USA and University of California-Riverside, Riverside, California 92521, USA and RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  • Baublis V; PNPI, Petersburg Nuclear Physics Institute, Gatchina, Leningrad Region 188300, Russia.
  • Baumann C; Institut fur Kernphysik, University of Muenster, D-48149 Muenster, Germany.
  • Bazilevsky A; Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  • Belikov S; Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  • Belmont R; Vanderbilt University, Nashville, Tennessee 37235, USA.
  • Ben-Benjamin J; Muhlenberg College, Allentown, Pennsylvania 18104-5586, USA.
  • Bennett R; Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA.
  • Bhom JH; Yonsei University, IPAP, Seoul 120-749, Korea.
  • Blau DS; Russian Research Center "Kurchatov Institute", Moscow 123098, Russia.
  • Bok JS; Yonsei University, IPAP, Seoul 120-749, Korea.
  • Boyle K; RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA and Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA.
  • Brooks ML; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Broxmeyer D; Muhlenberg College, Allentown, Pennsylvania 18104-5586, USA.
  • Buesching H; Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  • Bumazhnov V; IHEP Protvino, State Research Center of Russian Federation, Institute for High Energy Physics, Protvino 142281, Russia.
  • Bunce G; Physics Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA and RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973-5000, USA.
  • Butsyk S; Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
  • Campbell S; Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA.
  • Caringi A; Muhlenberg College, Allentown, Pennsylvania 18104-5586, USA.
  • Castera P; Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA.
  • Chen CH; Department of Physics and Astronomy, Stony Brook University, SUNY, Stony Brook, New York 11794-3400, USA.
Phys Rev Lett ; 112(25): 252301, 2014 Jun 27.
Article em En | MEDLINE | ID: mdl-25014805
ABSTRACT
The PHENIX experiment has measured open heavy-flavor production via semileptonic decay over the transverse momentum range 1 < p(T) < 6 GeV/c at forward and backward rapidity (1.4 < |y| < 2.0) in d+Au and p + p collisions at √sNN = 200 GeV. In central d+Au collisions, relative to the yield in p + p collisions scaled by the number of binary nucleon-nucleon collisions, a suppression is observed at forward rapidity (in the d-going direction) and an enhancement at backward rapidity (in the Au-going direction). Predictions using nuclear-modified-parton-distribution functions, even with additional nuclear-p(T) broadening, cannot simultaneously reproduce the data at both rapidity ranges, which implies that these models are incomplete and suggests the possible importance of final-state interactions in the asymmetric d + Au collision system. These results can be used to probe cold-nuclear-matter effects, which may significantly affect heavy-quark production, in addition to helping constrain the magnitude of charmonia-breakup effects in nuclear matter.
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Base de dados: MEDLINE Idioma: En Ano de publicação: 2014 Tipo de documento: Article
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Base de dados: MEDLINE Idioma: En Ano de publicação: 2014 Tipo de documento: Article