English

Constraining the low-energy S=-2 meson-baryon interaction with two-particle correlations

High Energy Physics - Phenomenology 2023-12-21 v2 Nuclear Theory

Abstract

The two-particle correlation technique applied to KΛK^-\Lambda pairs in pp collisions at LHC recently provided the most precise data on the strangeness S=2S=-2 meson-baryon interaction. In this letter, we use for the first time femtoscopic data to constrain the parameters of a low-energy effective QCD Lagrangian. The tuned model delivers new insights on the molecular nature of the Ξ(1620)\Xi(1620) and Ξ(1690)\Xi(1690) states. This procedure opens the possibility to determine higher order corrections, directly constraining QCD effective models particularly in the multi-strange and charm sectors.

Keywords

Cite

@article{arxiv.2309.08756,
  title  = {Constraining the low-energy S=-2 meson-baryon interaction with two-particle correlations},
  author = {V. Mantovani Sarti and A. Feijoo and I. Vidaña and A. Ramos and F. Giacosa and T. Hyodo and Y. Kamiya},
  journal= {arXiv preprint arXiv:2309.08756},
  year   = {2023}
}