Hyperon-Nucleon Scattering from Fully-Dynamical Lattice QCD
Silas R. Beane, Paulo F. Bedaque, Thomas C. Luu, Kostas Orginos,, Elisabetta Pallante, Assumpta Parreno, Martin J. Savage
TL;DR
This paper reports the first fully-dynamical lattice QCD calculations of hyperon-nucleon scattering, providing phase shifts for n Lambda and n Sigma- interactions at various pion masses, advancing understanding of hyperon interactions.
Contribution
It introduces the first fully-dynamical lattice QCD results for hyperon-nucleon scattering, including phase shifts at multiple pion masses.
Findings
Determined s-wave phase shifts for n Lambda scattering in both spin channels.
Calculated phase shifts for n Sigma- scattering at two pion masses.
Used domain-wall valence quarks on dynamical staggered gauge configurations.
Abstract
We present results of the first fully-dynamical lattice QCD determination of hyperon-nucleon scattering. One s-wave phase shift was determined for n Lambda scattering in both spin-channels at pion masses of 350, 490, and 590 MeV, and for n Sigma- scattering in both spin channels at pion masses of 490, and 590 MeV. The calculations were performed with domain-wall valence quarks on dynamical, staggered gauge configurations with a lattice spacing of b ~ 0.125 fm.
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