Status of the hyperon-nucleon interaction in chiral effective field theory

Abstract

The Jülich-Bonn group aims at an extensive study of the baryon-baryon ($BB$) interaction involving strange baryons ($\Lambda$, $\Sigma$, $\Xi$) within SU(3) chiral effective field theory. An overview of achievements and new developments over the past few years is provided. The topics covered are: 1) Derivation of the leading charge-symmetry breaking (CSB) interaction for the $\Lambda N$ system and its application in a study of CSB effects in $A$=$4$ $\Lambda$-hypernuclei. 2) Updated results for the $\Xi N$ interaction at NLO and predictions for ${\Xi }^{-}p$ correlation functions. 3) Extension of the $\Lambda N$-$\Sigma N$ interaction to next-to-next-to-leading order.

8 pages, 5 figures, Contribution to proceedings of HYP2022

References in corpus (8)

• Chiral effective field theory and nuclear forces
• Improved chiral nucleon-nucleon potential up to next-to-next-to-next-to-leading order
• Femtoscopic study of coupled-channel $N\Xi$ and $\Lambda \Lambda$ interactions
• Do $\Xi \Xi$ bound states exist?
• First measurement of the $\Lambda$-$\Xi$ interaction in proton-proton collisions at the LHC
• Constraints on the $\Lambda$-neutron interaction from charge symmetry breaking in the ${}_{\mathbf{\Lambda }}^4\mathbf{He}$--${}_{\mathbf{\Lambda }}^4\mathbf{H}$ hypernuclei
• $A=4-7$ $\Xi$ hypernuclei based on interactions from chiral effective field theory
• Measurements of $p$-$\Xi$, $\Lambda$-$\Lambda$, and $\Xi$-$\Xi$ Correlation in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV at RHIC-STAR

Cited by in corpus (3)

• Hyperon-nucleon interaction in chiral effective field theory at next-to-next-to-leading order
• Theoretical study on $\Lambda \alpha$ and $\Xi \alpha$ correlation functions
• Theoretical study of the $\Xi \alpha$ correlation function