Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8194953 | Physics Letters B | 2009 | 4 Pages |
Abstract
We formulate the QCD critical point focusing effect on transverse velocity (βt) dependence of antiproton to proton (p¯/p) ratio, which was recently proposed by Asakawa et al. as an experimental signature of QCD critical point in high energy heavy ion collisions (HICs). For quantitative analysis, Ultra-relativistic Quantum Molecular Dynamics (UrQMD) transport model and THERMal heavy-IoN generATOR (THERMINATOR) are applied to calculate the corresponding βt dependence of p¯/p ratio for three gedanken focused isentropic trajectories with different focusing degree on QCD phase diagram. Finally, we obtained an observable anomaly in βt dependence of p¯/p ratio, which can be employed as a signature of QCD critical point.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Xiao-Feng Luo, Ming Shao, Cheng Li, Hong-Fang Chen,