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Chinese Academy of Sciences Institutional Repositories Grid
gamma suppression at forward rapidity in Pb-Pb collisions at root s(NN)=5.02 TeV

文献类型:期刊论文

作者Acharya, S; Acosta, FT; Adamova, D; Adolfsson, J; Aggarwal, MM; Rinella, GA; Agnello, M; Agrawal, N; Ahammed, Z; Ahn, SU
刊名PHYSICS LETTERS B
出版日期2019
卷号790期号:-页码:89—101
ISSN号0370-2693
关键词QUARK-GLUON PLASMA TRANSVERSE-MOMENTUM DEPENDENCE J/PSI SUPPRESSION UPSILON PRODUCTION PP COLLISIONS PERSPECTIVE
DOI10.1016/j.physletb.2018.11.067
文献子类期刊论文
英文摘要Inclusive gamma(1S) and gamma(2S) production have been measured in Pb-Pb collisions at the centre-of-mass energy per nucleon-nucleon pair root s(NN) = 5.02 TeV, using the ALICE detector at the CERN LHC. The gamma mesons are reconstructed in the centre-of-mass rapidity interval 2.5 < y < 4 and in the transverse momentum range p(T) < 15 GeV/c, via their decays to muon pairs. In this Letter, we present results on the inclusive gamma(1S) nuclear modification factor R-AA as a function of collision centrality, transverse momentum and rapidity. The gamma(1S) and gamma(2S) R-AA, integrated over the centrality range 0-90%, are 0.37 +/- 0.02(stat) +/- 0.03(syst) and 0.10 +/- 0.04(stat) +/- 0.02(syst), respectively, leading to a ratio R-AA(gamma(2S))/R-AA(gamma(1S))of 0.28 +/- 0.12(stat) +/- 0.06(syst). The observed gamma(1S) suppression increases with the centrality of the collision and no significant variation is observed as a function of transverse momentum and rapidity. (C) 2018 Published by Elsevier B.V.
语种英语
源URL[http://ir.sinap.ac.cn/handle/331007/31644]  
专题上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位1.Rudjer Boskovic Inst, Zagreb, Croatia;
2.Univ Copenhagen, Niels Bohr Inst, Copenhagen, Denmark;
3.Natl Inst Subat Phys, Nikhef, Amsterdam, Netherlands;
4.NRC Kurchatov Inst IHEP, Protvino, Russia;
5.NRNU Moscow Engn Phys Inst, Moscow, Russia;
6.STFC Daresbury Lab, Nucl Phys Grp, Daresbury, England;
7.Czech Acad Sci, Nucl Phys Inst, Rez, Czech Republic;
8.Oak Ridge Natl Lab, Oak Ridge, TN USA;
9.Ohio State Univ, Columbus, OH 43210 USA;
10.Petersburg Nucl Phys Inst, Gatchina, Russia;
推荐引用方式
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Acharya, S,Acosta, FT,Adamova, D,et al. gamma suppression at forward rapidity in Pb-Pb collisions at root s(NN)=5.02 TeV[J]. PHYSICS LETTERS B,2019,790(-):89—101.
APA Acharya, S.,Acosta, FT.,Adamova, D.,Adolfsson, J.,Aggarwal, MM.,...&Zou, S.(2019).gamma suppression at forward rapidity in Pb-Pb collisions at root s(NN)=5.02 TeV.PHYSICS LETTERS B,790(-),89—101.
MLA Acharya, S,et al."gamma suppression at forward rapidity in Pb-Pb collisions at root s(NN)=5.02 TeV".PHYSICS LETTERS B 790.-(2019):89—101.

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来源:上海应用物理研究所

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