Mean-field effects on matter and antimatter elliptic flow

作     者：KO Cheming CHEN Liewen GRECO Vincenzo LI Feng LIN Ziwei PLUMARI Salvatore SONG Taesoo XU Jun 

作者机构：Cyclotron Institute and Department of Physics and AstronomyTexas A & M UniversityCollege Station Department of PhysicsShanghai Jiao Tong University Dipartimento di Fisica e AstronomiaUniversitá di CataniaVia S.Sofia 64 Department of PhysicsEast Carolina UniversityC-209 Howell Science ComplexGreenville Shanghai Institute of Applied PhysicsChinese Academy of Sciences 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2013年第24卷第5期

页      面：132-139页

核心收录：

学科分类：08[工学] 0807[工学-动力工程及工程热物理] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 0703[理学-化学] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Supported by the U.S.National Science Foundation(Grant No.PHY-106857) the Welch Foundation(Grant No.A-1358) the NNSF of China(Grant Nos.11135011 and 11275125) Shanghai Rising-Star Program(Grant No.11QH1401100) "Shu Guang" project "Eastern Scholar" program of Shanghai the ERC-StG(Grant QGPDyn No.259684) 

主　　题：椭圆流 平均场 反物质 强子相互作用 重离子碰撞 重离子对撞机 输运模型 RHIC 

摘      要：We report our recent work on mean-field potential effects on the elliptic flows of matters and antimatters in heavy ion collisions leading to the production of a baryon-rich *** the framework of a multiphase transport(AMPT) model that includes both initial partonic and final hadronic interactions,we have found that including mean-field potentials in the hadronic phase leads to a splitting of the elliptic flows of particles and their antiparticles,providing thus a plausible explanation of the different elliptic flows between p and anti-p,K+and K-,and π+ and π- observed by the STAR Collaboration in the Beam Energy Scan(BES) program at the Relativistic Heavy Ion Collider(RHIC).Using a partonic transport model based on the Nambu-Jona-Lasinio(NJL) model,we have also studied the effect of scalar and vector mean fields on the elliptic flows of quarks and antiquarks in these *** quarks and antiquarks at hadronization to hadrons via the quark coalescence model,we have found that the elliptic flow differences between particles and antiparticles also depend on the strength of the quark vector coupling in baryon-rich quark-gluon plasma,providing thus the possibility of extracting information on the latter s properties from the BES program at RHIC.