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 E08: Minisymposium: Equation of State Information from Astrophysics and Nuclear Physics Experiments
7:00 PM–9:30 PM,
Wednesday, November 29, 2023
Hilton Waikoloa Village
Room: Kohala 1
Chair: Mizuki Kurata-NIshimura
Abstract: E08.00008 : Constraints from the SπRIT experiment and their implications on nuclear matter equation of state*
9:00 PM–9:15 PM
Presenter:
Manyee B Tsang
(Michigan State University)
Authors:
Chun Yuen Tsang
(Kent State University)
Manyee B Tsang
(Michigan State University)
William G Lynch
(Michigan State University)
YingXun Zhang
(China Institute of Atomic Energy)
Collaboration:
SπRIT Collaboration
In this talk, we present directed flow, elliptic flow and stopping (VarXZ) observable from fixed target Sn + Sn collision at 270 AMeV recorded by the SπRIT time projection chamber (TPC). Bayesian inference is performed to compare experimental results with predictions from the Improved Quantum Molecular Dynamics-Skyrme (ImQMD-Sky) transport model. We obtain tight constraints on effective masses and in-medium cross-section.
By incorporating these constraints, along with constraints derived from pion ratio data [1], we aim to enhance our understanding of neutron stars. Additionally, we briefly explore how multi-messenger constraints contribute to determining the nuclear EoS at various baryon densities.
Reference:
[1] J. Estee, W. G. Lynch, C. Y. Tsang, J. Barney, G. Jhang, M. B. Tsang, R. Wang, M. Kaneko, J. W. Lee, T. Isobe, et al., Probing the Symmetry Energy with the Spectral Pion Ratio, Physical Review Letters 126, 162701 (2021).
*This work is supported in part by the National Science Foundation under Grant No. PHY-2209145.
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