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The role of chiral symmetry and the non-ordinary $\kappa/K^* 0(700)$ nature in $\pi^\pm K S$ femtoscopic correlations by Albaladejo, Miguel; Canoa, Alejandro; Nieves, Juan; Peláez, Jose Ramón; Ruiz-Arriola, Enrique; de Elvira, Jacobo Ruiz is a scholarly article available to read on EtoBox.

What is The role of chiral symmetry and the non-ordinary $\kappa/K^* 0(700)$ nature in $\pi^\pm K S$ femtoscopic correlations about?

We show that the use of realistic $\pi K$ interactions, obtained from a dispersive analysis of scattering data, as well as relativistic corrections, are essential to describe recently observed $\pi^\pm K_S$ femtoscopic correlations. We demonstrate that the spontaneous chiral symmetry breaking dynamics and the non-ordinary features of the $\kappa/K^*_0(700)$ resonance, together with large cancellations between isospin channels, produce a large suppression of $\pi^\pm K_S$ femtoscopic correlations compared to widely used models. Within an improved version of the standard on-shell factorization formalism, we illustrate that compensating for this interaction suppression leads to source radii smaller than 1 fm, contrary to usual expectations, as well as larger correlation strengths. The relation between these two parameters cannot be accommodated within naive models describing the nature of the resonances. This may raise concerns about the applicability of popular but too simple approaches for systems with light mesons. However, the correlation-suppression effects we demonstrate here will be relevant in any formalism, and substantial corrections may be expected for other femtoscopic sys

Author

Albaladejo, Miguel; Canoa, Alejandro; Nieves, Juan; Peláez, Jose Ramón; Ruiz-Arriola, Enrique; de Elvira, Jacobo Ruiz

Published

2025

Language

EN