Abstract

We present preliminary results on the light, charmed and bottom baryon spectra using overlap valence quarks on the background of 2+1+1 flavours HISQ gauge configurations of the MILC collaboration. These calculations are performed on three different gauge ensembles at three lattice spacings (a ∼ 0.12 fm, 0.09 fm and 0.06 fm) and for physical strange, charm and bottom quark masses. The SU(2) heavy baryon chiral perturbation theory is used to extrapolate baryon masses to the physical pion mass and the continuum limit extrapolations are also performed. Our results are consistent with the well measured charmed baryons. We predict the masses of many other states which are yet to be discovered.

Highlights

  • Energy spectra of heavy hadrons as well as the spin splittings between them plays an important role in theoretical understanding of the strong interactions of our universe

  • Particular emphasis is given on the calculations of the charm and bottom baryons which are extracted at three lattice spacings and are extrapolated to the continuum limit

  • While a comprehensive analysis with existing data set is underway, here we present our preliminary results on the ground state energy spectra for light as well as heavy hadrons with particular emphasis on charmed and charmed-bottom baryons

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Summary

Introduction

Energy spectra of heavy hadrons as well as the spin splittings between them plays an important role in theoretical understanding of the strong interactions of our universe. The first principle calculations using Lattice QCD is an essential tool to study the energy spectra of these heavy hadrons. First principle calculations using Lattice QCD are essential to study the spectrum of these heavy hadrons in a model independent way. That these calculations can provide crucial inputs for the understanding of the structure and interactions of these states, and make predictions that can guide future discoveries. It is crucial to take appropriate continuum limit to eliminate this systematic error. In this talk we present updated results from our ongoing study on the hadron spectra. Particular emphasis is given on the calculations of the charm and bottom baryons which are extracted at three lattice spacings and are extrapolated to the continuum limit

Numerical Details
Results
Light hadrons
Charmed hadrons
Conclusions

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