https://doi.org/10.1051/epjconf/202225911009
Hyperon Global Polarization in Nucleus-Nucleus Collisions at sub-10-GeV Beam Energy
1 Guangdong Provincial Key Laboratory of Nuclear Science, Institute of Quantum Matter, South China Normal University, Guangzhou 510006, China
2 Guangdong-Hong Kong Joint Laboratory of Quantum Matter, South China Normal University, Guangzhou 510006, China
3 Physics Department and Center for Exploration of Energy and Matter, Indiana University, 2401 N Milo B. Sampson Lane, Bloomington, IN 47408, USA
* e-mail: liaoji@indiana.edu
** e-mail: wangek@scnu.edu.cn
*** e-mail: hxing@m.scnu.edu.cn
**** e-mail: mr.zhanghui@m.scnu.edu.cn
Published online: 1 February 2022
In this contribution, we report AMPT model study for the hyperon global polarization in the heavy ion collision, especially in the interesting Ô (1 ~ 10) GeV energy region. We find a non-monotonic trend, with the global polarization to first increase and then decrease when beam energy is lowered from 27 GeV down to 3 GeV, with a maximum polarization signal located around √SNN = 7.7 GeV. In addition, local polarization patterns are also computed in the same energy regime.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
