Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb-Pb collisions at root s(NN)=5.02 TeV
文献类型：期刊论文
| 作者 | Acharya, S; Adamova, D; Adhya, SP; Adler, A; Adolfsson, J; Aggarwal, MM; Rinella, GA; Agnello, M; Agrawal, N; Ahammed, Z |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2020 |
| 卷号 | 804页码:- |
| ISSN号 | 0370-2693 |
| 关键词 | RADIATIVE ENERGY-LOSS ION COLLISIONS SUPPRESSION |
| DOI | 10.1016/j.physletb.2020.135377 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The differential invariant yield as a function of transverse momentum (p(T)) of electrons from semileptonic heavy-flavour hadron decays was measured at midrapidity in central (0-10%), semi-central (30-50%) and peripheral (60-80%) lead-lead (Pb- Pb) collisions at root s(NN) = 5.02 TeV in the p(T) intervals 0.5-26GeV/c( 0-10% and 30-50%) and 0.5-10 GeV/c (60-80%). The production cross section in proton-proton (pp) collisions at root s = 5.02 TeV was measured as well in 0.5 < pT< 10GeV/c and it lies close to the upper band of perturbative QCD calculation uncertainties up to p(T) = 5 GeV/c and close to the mean value for larger p(T). The modification of the electron yield with respect to what is expected for an incoherent superposition of nucleon-nucleon collisions is evaluated by measuring the nuclear modification factor R-AA. The measurement of the R-AA in different centrality classes allows in-medium energy loss of charm and beauty quarks to be investigated. The R-AA shows a suppression with respect to unity at intermediate p(T), which increases while moving towards more central collisions. Moreover, the measured R-AA is sensitive to the modification of the parton distribution functions (PDF) in nuclei, like nuclear shadowing, which causes a suppression of the heavy-quark production at low p(T) in heavy-ion collisions at LHC. (c) 2020 Conseil Europeen pour la Recherche Nucleaire. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32992]  |
| 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.INFN, Sez Trieste, Trieste, Italy 2.Univ Padua, Dipartimento Fis & Astron, Padua, Italy 3.Sezione Ist Nazl Fis Nucl, Padua, Italy 4.Univ Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy (4 5.Grp Collegato INFN, Salerno, Italy 6.Politecn Torino, Dipartimento DISAT, Turin, Italy 7.Univ Piemonte Orientale, Dipartimento Sci & Innovaz Tecnol, Alessandria, Italy 8.INFN, Sez Torino, Alessandria, Italy 9.Dipartimento Interateneo Fis M Merlin, Bari, Italy 10.Sezione Ist Nazl Fis Nucl, Bari, Italy |
| 推荐引用方式 GB/T 7714 | Acharya, S,Adamova, D,Adhya, SP,et al. Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb-Pb collisions at root s(NN)=5.02 TeV[J]. PHYSICS LETTERS B,2020,804:-. |
| APA | Acharya, S.,Adamova, D.,Adhya, SP.,Adler, A.,Adolfsson, J.,...&Zurlo, N.(2020).Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb-Pb collisions at root s(NN)=5.02 TeV.PHYSICS LETTERS B,804,-. |
| MLA | Acharya, S,et al."Measurement of electrons from semileptonic heavy-flavour hadron decays at midrapidity in pp and Pb-Pb collisions at root s(NN)=5.02 TeV".PHYSICS LETTERS B 804(2020):-. |
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来源：上海应用物理研究所
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