Bottom baryons from a dynamical lattice QCD simulation

TL;DR

This paper presents lattice QCD calculations of bottom baryon masses using dynamical simulations with NRQCD for the bottom quark, providing theoretical predictions and comparisons with experimental data.

Contribution

It introduces a new lattice QCD approach for bottom baryon mass calculations using 2+1 flavor dynamical simulations with improved actions.

Findings

Calculated bottom baryon masses agree with experimental values within uncertainties.

Provided predictions for unobserved double-b baryons.

Demonstrated the effectiveness of lattice NRQCD in heavy baryon studies.

Abstract

Bottom baryon masses are calculated based on a 2+1 flavor dynamical lattice QCD simulation. The gauge field configurations were computed by the CP-PACS and JLQCD collaborations using an improved clover action. The bottom quark is described using lattice NRQCD. Results are presented for single and double-b baryons at one lattice spacing. Comparison with experimental values is discussed.