Heavy flavor dissociation in framework of multi-body Dirac equations  

作　　者：Shuzhe Shi Jiaxing Zhao Pengfei Zhuang 施舒哲;赵佳星;庄鹏飞(Physics Department,Tsinghua University,Beijing 100084,China;Department of Physics,McGill University,Montreal,QC H3A 2T8,Canada)

机构地区：[1]Physics Department,Tsinghua University,Beijing 100084,China [2]Department of Physics,McGill University,Montreal,QC H3A 2T8,Canada

出　　处：《Chinese Physics C》2020年第8期115-124,共10页中国物理C（英文版）

基　　金：Supported by the NSFC(11575093,11890712);the Natural Sciences and Engineering Research Council of Canada。

摘　　要：We study heavy flavor properties at finite temperature in the framework of a relativistic potential model.Using an improved method to solve the three-body Dirac equation,we determine a universal set of model parameters for both mesons and baryons by fitting heavy flavor masses in vacuum.Taking heavy quark potential from lattice QCD simulations in hot medium,we systematically calculate heavy flavor binding energies and averaged sizes as functions of the temperature.The meson and baryons are separately sequentially dissociated in the quark-gluon plasma,and the mesons can survive at higher temperatures owing to the stronger potential between quark-antiquark pairs than that between quark-quark pairs.

关 键 词：heavy flavor hadron dissociation relativistic heavy-ion collision heavy flavor baryon 

分 类 号：O572.3[理学—粒子物理与原子核物理]