Bottom quark dynamics from nonprompt D0 and J/ψ production in Pb plus Pb collisions at √sNN=5.02 TeV

被引：3

作者：

Xing, Wen-Jing ^{[1
]}

Li, Shu-Qing ^{[2
]}

Cao, Shanshan ^{[1
]}

Qin, Guang-You ^{[3
,4
]}

机构：

[1] Shandong Univ, Inst Frontier & Interdisciplinary Sci, Qingdao 266237, Shandong, Peoples R China

[2] Jining Univ, Sch Phys & Elect Engn, Qufu 273155, Shandong, Peoples R China

[3] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China

[4] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Hubei, Peoples R China

来源：

PHYSICAL REVIEW C | 2024年 / 110卷 / 02期

基金：

中国博士后科学基金;

关键词：

NON-PROMPT J/PSI; HEAVY-FLAVOR; ELLIPTIC FLOW; ENERGY-LOSS; LHC; FRAGMENTATION; SUPPRESSION; LIGHT;

D O I：

10.1103/PhysRevC.110.024903

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We study bottom quark energy loss via the nuclear modification factor (RAA) and elliptic flow (v2) of profile of quark-gluon plasma is obtained from the CLVISC hydrodynamics simulation, the dynamical evolution of heavy quarks inside the color deconfined QCD medium is simulated using a linear Boltzmann transport model that combines Yukawa and string potentials of heavy-quark-medium interactions, the hadronization of heavy quarks is performed using a hybrid coalescence-fragmentation model, and the decay of B mesons is simulated via PYTHIA. Using this numerical framework, we calculate the transverse momentum (pT) dependent RAA and v2 of direct D mesons, B mesons, and nonprompt D0 and f/psi from B meson decay in Pb+Pb collisions at .,/sNN = 5.02 TeV. We find the mass hierarchy of the nuclear modification of prompt D and B mesons depends on their pT. Both RAA and v2 of heavy flavor particles show strong pT and centrality dependences due to the interplay between parton energy loss, medium geometry and flow, and hadronization of heavy quarks. Nonprompt D0 and f/psi share similar patterns of RAA and v2 to B mesons except for a pT shift during the decay processes. Therefore, future more precise measurements on nonprompt D0 and f/psi can help further pin down the bottom quark dynamics inside the quark-gluon plasma.

引用

页数：10

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