Squeezed back-to-back correlations of K+K- in d+Au collisions at sNN1/2=200 GeV and Au+Au collisions at sNN1/2=62.4 GeV

作     者：张勇 杨婧 吴卫华 Yong Zhang;Jing Yang;Weihua Wu

作者机构：School of Mathematics and PhysicsJiangsu University of TechnologyChangzhouJiangsu 213001China School of ScienceInner Mongolia University of Science & TechnologyBaotouInner Mongolia Autonomous Region 014010China School of Physics and School of International Education TeachersChangchun Normal UniversityChangchun 130032China 

出 版 物：《Chinese Physics C》 (中国物理C（英文版）)

年 卷 期：2019年第43卷第7期

页      面：61-69页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 

基　　金：Supported by the National Natural Science Foundation of China(11647166,11747155) the Natural Science Foundation of Inner Mongolia(2017BS0104) Changzhou Science and Technology Bureau(CJ20180054) the Foundation of Jiangsu University of Technology(KYY17028) 

主　　题：squeezed back-to-back correlations K^+K^- mass modification dense medium 

摘      要：We investigate the squeezed back-to-back correlations(BBC) of K^+K^-, caused by the mass modification of particles in the dense medium formed in d + Au collisions at √sNN= 200 GeV and Au + Au collisions at √sNN= 62.4 GeV. Considering that some kaons may not be affected by the medium, we further study the BBC functions of K+K-when parts of all kaons have a mass-shift. Our results indicate that the BBC functions of K+K-can be observed when only ~10% of all kaons have a mass-shift in d + Au collisions at √sNN = 200 GeV and the peripheral collisions of Au + Au at √sNN= 62.4 GeV. Since the BBC function is caused by the mass-shift due to the interactions between the particle and the medium, the successful detection of the BBC function indirectly marks that the dense medium has formed in these collision systems. We suggest the experimental measurement of the BBC function of K^+K^- in d + Au collisions at √sNN = 200 GeV and peripheral collisions of Au + Au at √sNN= 62.4 GeV.