Femtoscopic study of the $S=-1$ meson-baryon interaction: $K^-p$, $π^-Λ$ and $K^+Ξ^-$ correlations
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| Main Authors: | , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866910981511184384 |
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| author | Encarnación, P. Feijoo, A. Sarti, V. Mantovani Ramos, A. |
| author_facet | Encarnación, P. Feijoo, A. Sarti, V. Mantovani Ramos, A. |
| contents | We study the femtoscopic correlation functions of meson-baryon pairs in the strangeness $S=-1$ sector, employing unitarized s-wave scattering amplitudes derived from the chiral Lagrangian up to next-to-leading order. For the first time, we deliver predictions on the $π^-Λ$ and $K^+Ξ^-$ correlation functions which are feasible to be measured at the Large Hadron Collider. We also demonstrate that the employed model is perfectly capable of reproducing the $K^-p$ correlation function data measured by the same collaboration, without the need to modify the coupling strength to the $\bar{K}^0n$ channel, as has been recently suggested. In all cases, the effects of the source size on the correlation are tested. In addition, we present detailed analysis of the different coupled-channel contributions, together with the quantification of the relative relevance of the different terms in the interaction. These calculations require the knowledge of the so-called production weights, for which we present two novel methods to compute them. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_20880 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Femtoscopic study of the $S=-1$ meson-baryon interaction: $K^-p$, $π^-Λ$ and $K^+Ξ^-$ correlations Encarnación, P. Feijoo, A. Sarti, V. Mantovani Ramos, A. High Energy Physics - Phenomenology Nuclear Theory We study the femtoscopic correlation functions of meson-baryon pairs in the strangeness $S=-1$ sector, employing unitarized s-wave scattering amplitudes derived from the chiral Lagrangian up to next-to-leading order. For the first time, we deliver predictions on the $π^-Λ$ and $K^+Ξ^-$ correlation functions which are feasible to be measured at the Large Hadron Collider. We also demonstrate that the employed model is perfectly capable of reproducing the $K^-p$ correlation function data measured by the same collaboration, without the need to modify the coupling strength to the $\bar{K}^0n$ channel, as has been recently suggested. In all cases, the effects of the source size on the correlation are tested. In addition, we present detailed analysis of the different coupled-channel contributions, together with the quantification of the relative relevance of the different terms in the interaction. These calculations require the knowledge of the so-called production weights, for which we present two novel methods to compute them. |
| title | Femtoscopic study of the $S=-1$ meson-baryon interaction: $K^-p$, $π^-Λ$ and $K^+Ξ^-$ correlations |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2412.20880 |