English

Constraining the p{\Lambda} interaction from a combined analysis of scattering data and correlation functions

Nuclear Theory 2024-11-01 v2 Nuclear Experiment

Abstract

This work provides the first combined analysis of low-energy pΛ\Lambda scattering, considering both cross section and correlation data. The obtained results establish the most stringent constraints to date on the two-body pΛ\Lambda interaction, pointing to a weaker attraction than so far accepted. The best set of scattering lengths for the spin singlet and triplet are found to range from f0,f1=(2.1,1.56)f_0, f_1 = (2.1, 1.56) to (3.34,1.18) (3.34, 1.18)~fm. With a chiral NY potential fine-tuned to those scattering parameters, the in-medium properties of the Λ\Lambda are explored and a potential depth of UΛ=36.3±1.3(stat)6.2+2.5(syst)U_\Lambda= -36.3\pm 1.3 \mathrm{(stat)}^{+2.5}_{-6.2}\mathrm{(syst)} MeV is found at nuclear matter saturation density.

Keywords

Cite

@article{arxiv.2312.16970,
  title  = {Constraining the p{\Lambda} interaction from a combined analysis of scattering data and correlation functions},
  author = {D. L. Mihaylov and J. Haidenbauer and V. Mantovani Sarti},
  journal= {arXiv preprint arXiv:2312.16970},
  year   = {2024}
}

Comments

The initial upload contained a wrong entry in Table 1. The 'f1' for point iv) was WRONGLY written as 1.54 fm, whereas the CORRECT value is 1.32 fm

R2 v1 2026-06-28T14:03:38.439Z