Directed and elliptic flow using neutron rich Sn + Sn collisions with 270MeV/u

Rapidity dependence of directed flow v₁ and elliptic flow v₂ were analyzed for various particles, including proton, deuteron, triton, ³He, and ⁴He.

The experiment was performed by SpiRIT-TPC with wide acceptance at SAMURAI in RIKEN-RIBF.

Using radioactive ion beams, ¹³²Sn+¹²⁴Sn and ¹⁰⁸Sn+¹¹²Sn collisions at 270 MeV/u were utilized to study system dependence with different isospin asymmetries and a common total charge.

To understand the experimental data, we compared them with AMD calculations which explicitly consider the cluster correlation.

Two types of momentum-dependent mean field potential were utilized.

AMD calculations explain the tendency of mass dependence but cannot describe all particles simultaneously.

The sensitivity to the density dependence of the symmetry energy and the system dependence are also discussed.

At last, the newly proposed flow analysis method will be discussed.

*This work was supported by the Japanese MEXT KAKENHI (Grant-in-Aid for Scientific Research on Innovative Areas) grant No. 24105004, JSPS KAKENHI Nos. JP17K05432 and JP19K14709, and JP21K03528, the U.S. Department of Energy under Grant Nos. DE-SC0014530, DE-NA0002923, and DE-FG02-93ER40773, the US National Science Foundation Grant No. PHY-1565546, the Polish National Science Center (NCN), Poland, under contract Nos. UMO-2013/09/B/ST2/ 04064 and UMO-2013/10/M/ST2/00624, and the National Research Foundation of Korea (NRF) under Grant Nos. 2018R1A5A1025563, 2016K1A3A7A09005578, and 2013M7A1A1075764. I. G. was supported by HIC for FAIR and the Croatian Science Foundation under projects Nos. 1257 and 7194. One of the authors (M. K.) acknowledges the support from the RIKEN Junior Research Associate Program. The computing resource for the data analysis and the theoretical calculations were provided by the HOKUSAI GreatWave system at RIKEN. The authors also wish to thank the accelerator technical staff at RIBF for the excellent beam supply.

About APS

The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.

Headquarters 1 Physics Ellipse, College Park, MD 20740-3844 (301) 209-3200
Editorial Office 100 Motor Pkwy, Suite 110, Hauppauge, NY 11788 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700

Bulletin of the American Physical Society

6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan

Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island

Session 3WLB: Physics at High Baryon Density: Search for QCD Critical Point in High-Energy Nuclear Collisions II

Abstract: 3WLB.00003 : Directed and elliptic flow using neutron rich Sn + Sn collisions with 270MeV/u*

Presenter:

Authors:

Collaboration:

Follow Us

Engage

My APS

Information for

About APS