Femtoscopic study of coupled-channel $N\Xi$ and $\Lambda\Lambda$ interactions
Abstract
The momentum correlation functions of S = -2 baryon pairs (p Xi^- and Lambda Lambda) produced in high-energy pp and pA collisions are investigated on the basis of the coupled-channel formalism. The strong interaction is described by the coupled-channel HAL QCD potential obtained by the lattice QCD simulations near physical quark masses, while the hadronic source function is taken to be a static Gaussian form. The coupled-channel effect, the threshold difference, the realistic strong interaction, and the Coulomb interaction are fully taken into account for the first time in the femtoscopic analysis of baryon-baryon correlations. The characteristic features of the experimental data for the p Xi^- and Lambda Lambda pairs at LHC are reproduced quantitatively with a suitable choice of non-femtoscopic parameters and the source size. The agreement between theory and experiment indicates that the N Xi (Lambda Lambda) interaction is moderately (weakly) attractive without having a quasi-bound (bound) state.
Keywords
Cite
@article{arxiv.2108.09644,
title = {Femtoscopic study of coupled-channel $N\Xi$ and $\Lambda\Lambda$ interactions},
author = {Y. Kamiya and K. Sasaki and T. Fukui and T. Hyodo and K. Morita and K. Ogata and A. Ohnishi and T. Hatsuda},
journal= {arXiv preprint arXiv:2108.09644},
year = {2022}
}
Comments
13 pages, 10 figures