Status of two-baryon scattering in lattice QCD

TL;DR

Recent lattice QCD studies of baryon-baryon scattering have advanced in methodology and uncertainty control, suggesting no bound states at heavy pion masses, contrasting earlier exploratory results.

Contribution

This paper reviews recent lattice QCD calculations of baryon-baryon scattering, highlighting methodological improvements and updated findings on bound states.

Findings

No nucleon-nucleon bound state at heavy pion masses

Improved control over systematic uncertainties

Contrasts with earlier exploratory calculations

Abstract

In these proceedings, I will review lattice QCD calculations of baryon-baryon scattering, their methods, and their challenges. In the last few years, there has been a new generation of calculations with increased focus on controlling systematic uncertainties. Contrary to the findings of earlier exploratory calculations, it now appears probable that at heavy pion masses there is no nucleon-nucleon bound state.