$\Lambda$-deuteron momentum correlation functions incorporating deuteron breakup contributions in Faddeev formulation

TL;DR

This paper estimates the impact of deuteron breakup on the $Lambda$-deuteron momentum correlation function using Faddeev amplitudes with chiral EFT interactions, finding effects are generally small but relevant for data analysis.

Contribution

It introduces a Faddeev formulation incorporating breakup contributions in $Lambda$-deuteron scattering calculations with chiral EFT interactions, providing new insights into breakup effects.

Findings

Breakup effects in the incident channel are marginally insignificant.

Rearrangement channel effects are noticeable but not large for source radii > 2.5 fm.

Understanding these effects aids in analyzing experimental data.

Abstract

The effects of the deuteron breakup are estimated for the $\Lambda$-deuteron momentum correlation function. Faddeev amplitudes in calculating low-energy $\Lambda$-deuteron scattering can provide not only the elastic scattering part but also breakup wave functions in the incident and the rearrangement channels. Calculations are carried out using nucleon-nucleon (NN) and hyperon-nucleon (YN) interactions parametrized in chiral effective field theory. The effects of the breakup in the incident channel are found to be marginally insignificant. Those of the rearrangement channel are not negligible, but not large when the source radius is larger than 2.5 fm. Nevertheless, it is worthwhile to have the information on the magnitude of these effects in analyzing the experimental data.