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arXiv · 2309.08756

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

V. Mantovani Sarti·A. Feijoo·I. Vidaña·A. Ramos·F. Giacosa·T. Hyodo·Y. Kamiya
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Abstract

The two-particle correlation technique applied to $K^-\Lambda$ pairs in pp collisions at LHC recently provided the most precise data on the strangeness $S=-2$ 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 $\Xi(1620)$ and $\Xi(1690)$ states. This procedure opens the possibility to determine higher order corrections, directly constraining QCD effective models particularly in the multi-strange and charm sectors.

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V. Mantovani Sarti, A. Feijoo, I. Vidaña, A. Ramos, F. Giacosa, T. Hyodo, Y. Kamiya. 2023-09-15. Constraining the low-energy S=-2 meson-baryon interaction with two-particle correlations. https://arxiv.org/abs/2309.08756

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