Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic pp 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 | PHYSICAL REVIEW C
 |
| 出版日期 | 2020 |
| 卷号 | 101期号:4页码:- |
| ISSN号 | 2469-9985 |
| 关键词 | TRANSVERSE-MOMENTUM SPECTRA MULTIPLICITY DEPENDENCE NUCLEAR MODIFICATION AU+AU COLLISIONS FLOW QCD HADRONIZATION RECOGNITION PERSPECTIVE SUPPRESSION |
| DOI | 10.1103/PhysRevC.101.044907 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Midrapidity production of pi(+/-), K-+/-, and (<(p))over bar>p measured by the ALICE experiment at the CERN Large Hadron Collider, in Pb-Pb and inelastic pp collisions at root s(NN) = 5.02 TeV, is presented. The invariant yields are measured over a wide transverse momentum (p(T)) range from hundreds of MeV/c up to 20 GeV/c. The results in Pb-Pb collisions are presented as a function of the collision centrality, in the range 0-90%. The comparison of the P-T -integrated particle ratios, i.e., proton-to-pion (p/pi) and kaon-to-pion (K/pi) ratios, with similar measurements in Pb-Pb collisions at root s(NN) = 2.76 TeV show no significant energy dependence. Blast-wave fits of the p(T) spectra indicate that in the most central collisions radial flow is slightly larger at 5.02 TeV with respect to 2.76 TeV. Particle ratios (p/pi, K/pi) as a function of p(T) show pronounced maxima at p(T) approximate to 3 GeV/c in central Pb-Pb collisions. At high p(T) , particle ratios at 5.02 TeV are similar to those measured in pp collisions at the same energy and in Pb-Pb collisions at root sNN = 2.76 TeV. Using the pp reference spectra measured at the same collision energy of 5.02 TeV, the nuclear modification factors for the different particle species are derived. Within uncertainties, the nuclear modification factor is particle species independent for high p(T) and compatible with measurements at root sNN = 2.76 TeV. The results are compared to state-of-the-art model calculations, which are found to describe the observed trends satisfactorily. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/33086]  |
| 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 Roma, Rome, Italy
(7 2.INFN, Sez Torino, Turin, Italy 3.Russian Fed Nucl Ctr VNIIEF, Sarov, Russia 4.Homi Bhabha Natl Inst, Saha Inst Nucl Phys, Kolkata, India 5.Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England 6.Pontificia Univ Catolica Peru, Dept Ciencias, Secc Fis, Lima, Peru 7.Shanghai Inst Appl Phys, Shanghai, Peoples R China 8.St Petersburg State Univ, St Petersburg, Russia 9.Stefan Meyer Inst Subatomare Phys SMI, Vienna, Austria 10.Univ Nantes, IMT Atlantique, SUBATECH, CNRS,IN2P3, Nantes, France |
| 推荐引用方式 GB/T 7714 | Acharya, S,Adamova, D,Adhya, SP,et al. Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic pp collisions at root s(NN)=5.02 TeV[J]. PHYSICAL REVIEW C,2020,101(4):-. |
| APA | Acharya, S.,Adamova, D.,Adhya, SP.,Adler, A.,Adolfsson, J.,...&Zurlo, N.(2020).Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic pp collisions at root s(NN)=5.02 TeV.PHYSICAL REVIEW C,101(4),-. |
| MLA | Acharya, S,et al."Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic pp collisions at root s(NN)=5.02 TeV".PHYSICAL REVIEW C 101.4(2020):-. |
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来源：上海应用物理研究所
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