Study of K*（892）0 and ?（1020） meson production in proton–proton and Pb–Pb collisions at ■=2.76 TeV

作     者：Y Ali M Ahmed A Arif Q Ali U Tabassam U Rubab M Suleymanov 

作者机构：Department of Physics COMSATS University Institute for Physical Problems Baku State University 

出 版 物：《Communications in Theoretical Physics》 (理论物理)

年 卷 期：2021年第73卷第2期

页      面：93-99页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

主　　题：Quark Gluon Plasma EPOS-LHC nuclear modification factor 

摘      要：In this paper, we describe a study of charged particle yield as a function of pTfor K*（892）0and ?（1020） mesons in proton–proton（pp） and Pb–Pb collisions at ■=?2.76 Te V in the central rapidity region of |y|?3 Ge V c-1, the predictions were very close to the experimental data. Both models gave higher predictions for the soft pTinterval and lower predictions for the hard interactions. The values of the RAAdistributions were lower than unity and both models were very close to the ALICE data. It is very interesting that the models were not able to describe the pTdistributions, but they gave good predictions for their ratios. This may possibly be due to parton collective behaviors. We observed some additional suppression of K*0at low values of pT with respect to f-mesons, which may be related to the role of the masses of the particles in soft interactions. The rising trend for RAAin the region from pT=?10 Ge V c-1to 20 Ge V c-1observed by the ALICE experiment was absent for the f-mesons.