PoS - Proceedings of Science
Volume 413 - The 10th International Workshop on Chiral Dynamics (CD2021) - Parallel-Few-Body/Structure
Strangeness S=-3 and -4 baryon-baryon interactions in chiral effective field theory
J. Haidenbauer* and U.G. Meißner
Full text: pdf
Pre-published on: February 07, 2024
Published on: March 07, 2024
Abstract
Studies of the baryon-baryon interaction involving hyperons within chiral effective field theory, so far performed up to next-to-leading order (NLO) in the chiral expansion, have shown that for the strangeness $S=-1$ ($\Lambda N$, $\Sigma N$) and $S=-2$ ($\Lambda \Lambda$, $\Xi N$) sectors a consistent and satisfactory description of the available scattering data and experimental constraints can be achieved based on the assumption of broken SU(3) flavor symmetry.
We explore the possible extension of this approach at the NLO level to strangeness $S=-3$ and $S=-4$ baryon-baryon systems where empirical information is rather scarce. Specifically we address the question how measurements of two-particle correlation functions in heavy-ion collisions and/or in high-energy proton-proton collisions can help to constrain the interaction in channels like $\Xi\Lambda$ or $\Xi\Xi$.
DOI: https://doi.org/10.22323/1.413.0085
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