Heavy baryon spectrum on lattice with NRQCD bottom and HISQ lighter quarks

TL;DR

This study computes the mass spectra and hyperfine splittings of heavy baryons containing bottom quarks using lattice QCD with NRQCD and HISQ actions across multiple lattice spacings.

Contribution

It provides the first comprehensive lattice QCD calculation of heavy baryon spectra with bottom quarks using NRQCD and HISQ actions at multiple lattice spacings.

Findings

Mass spectra of bottom baryons determined

Hyperfine splittings calculated

Mass differences analyzed

Abstract

We determine the mass spectra of heavy baryons containing one or more bottom quarks along with their hyperfine splittings and various mass differences on MILC 2+1 Asqtad lattices at three different lattice spacings. NRQCD action is used for bottom quarks whereas relativistic HISQ action for the lighter up/down, strange and charm quarks. We consider all possible combinations of bottom and lighter quarks to construct the bottom baryon operators for the states $J^P=1/2^+$ and $3/2^+$.