$\Lambda$ and $\Sigma$ potentials in dense matter based on chiral EFT: Bridging heavy-ion collisions, hypernuclei, and neutron stars

Asanosuke Jinno; Koichi Murase; Yasushi Nara; Johann Haidenbauer

$\Lambda$ and $\Sigma$ potentials in dense matter based on chiral EFT: Bridging heavy-ion collisions, hypernuclei, and neutron stars

Nuclear Theory 2025-08-28 v1

Authors: Asanosuke Jinno , Koichi Murase , Yasushi Nara , Johann Haidenbauer

Abstract

The $\Lambda$ and $\Sigma$ directed flows at $\sqrt{s_{NN}}=4.5~\mathrm{GeV}$ are investigated to examine their sensitivity to the hyperon single-particle potentials. The single-particle potentials are obtained from $G$ -matrix calculations with two- and three-body forces based on SU(3) chiral effective field theory. The $\Lambda+\Sigma^0$ directed flow shows sensitivity to the variation in the $\Sigma$ single-particle potential. Its effect is more pronounced for the $\Sigma^0$ directed flow.

Keywords

hypernucleus chiral EFT single-particle potential directed flow hyperon

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@article{arxiv.2508.19560,
  title  = {$\Lambda$ and $\Sigma$ potentials in dense matter based on chiral EFT: Bridging heavy-ion collisions, hypernuclei, and neutron stars},
  author = {Asanosuke Jinno and Koichi Murase and Yasushi Nara and Johann Haidenbauer},
  journal= {arXiv preprint arXiv:2508.19560},
  year   = {2025}
}

Comments

4 pages, 2 figures, Submitted to Proceedings of Quark Matter 2025 (QM2025)

$\Lambda$ and $\Sigma$ potentials in dense matter based on chiral EFT: Bridging heavy-ion collisions, hypernuclei, and neutron stars

Abstract

Keywords

Cite

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