Constraining the pΛ interaction from a combined analysis of scattering data and correlation functions

Abstract

This work provides the first combined analysis of low-energy p$\hat{I}›$ scattering, considering both cross section and correlation data. The obtained results establish the most stringent constraints to date on the two-body p$\hat{I}›$ 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 $f_0,f_1=(2.1,1.56)$ to $(3.34,1.18)$fm. With a chiral NY potential fine-tuned to those scattering parameters, the in-medium properties of the $\hat{I}›$ are explored and a potential depth of $U_{\hat{I}}›=-36.3\pm 1.3{(\mathrm{stat})}_{-6.2}^{+2.5}(\mathrm{syst})$ MeV is found at nuclear matter saturation density.

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