Cold-Nuclear-Matter Effects on Heavy-Quark Production at Forward and Backward Rapidity in d + Au Collisions at root s(NN) = GeV
- Title
- Cold-Nuclear-Matter Effects on Heavy-Quark Production at Forward and Backward Rapidity in d + Au Collisions at root s(NN) = GeV
- Author
- 김용균
- Keywords
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS Cold-Nuclear-Matter; Effects; Heavy-Quark; Production; Forward; Backward; relativistic heavy ion collider; Cold-Nuclear-Matter
- Issue Date
- 2014-06
- Publisher
- AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
- Citation
- PHYSICAL REVIEW LETTERS,112(25)
- 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 < vertical bar y vertical bar < 2.0) in d + Au and p + p collisions at root s(NN) = 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.
- URI
- http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.112.252301http://hdl.handle.net/20.500.11754/55817
- ISSN
- 0031-9007; 1079-7114
- DOI
- 10.1103/PhysRevLett.112.252301
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
- Files in This Item:
- PhysRevLett.112.252301.pdfDownload
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