Hyperons in Two Flavor Chiral Perturbation Theory

Abstract

We use two-flavor chiral perturbation theory to describe hyperons. We focus on the strangeness conserving sector, and, as an example, calculate hyperon masses. Convergence of this two-flavor chiral expansion for observables is improved over the three-flavor theory. The cost, however, is a larger number of low-energy constants that must be ultimately determined from lattice QCD data. A formula for the mass of the omega baryon is derived to sixth order in this expansion, and will aid lattice practitioners in scale setting or tuning the strange quark mass.

14 pages, 3 figs, version published in PLB

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• The Omega- and the strange quark mass
• |Delta I|=3/2 Decays of the Omega^- in Chiral Perturbation Theory
• The Weak $\Lambda \Lambda K^0$ Interaction

Cited by in corpus (36)

• Light hadron spectroscopy using domain wall valence quarks on an Asqtad sea
• Baryon spectrum with $N_f=2+1+1$ twisted mass fermions
• Charmed-Baryon Spectroscopy from Lattice QCD with N_f=2+1+1 Flavors
• Singly and Doubly Charmed J=1/2 Baryon Spectrum from Lattice QCD
• Simulating twisted mass fermions at physical light, strange and charm quark masses
• The low-lying baryon spectrum with two dynamical twisted mass fermions
• Low-lying baryon masses using $N_f=2$ twisted mass clover-improved fermions directly at the physical point
• The lowest-lying baryon masses in covariant SU(3)-flavor chiral perturbation theory
• Towards grounding nuclear physics in QCD
• Quark masses using twisted mass fermion gauge ensembles
• A relativistic quark model for the Omega- electromagnetic form factors
• Aspects of meson-baryon scattering in three- and two-flavor chiral perturbation theory
• On finite volume effects in the chiral extrapolation of baryon masses
• High Statistics Analysis using Anisotropic Clover Lattices: (IV) Volume Dependence of Light Hadron Masses
• Chiral extrapolation of octet-baryon charge radii
• Strange and charm baryon masses with two flavors of dynamical twisted mass fermions
• S-wave scattering of strangeness -3 baryons
• Radiative transitions of doubly charmed baryons in lattice QCD
• Axial charges of hyperons and charmed baryons using $N_f=2+1+1$ twisted mass fermions
• Evidence for non-analytic light quark mass dependence in the baryon spectrum
• Topological susceptibility on the lattice and the three-flavour quark condensate
• Ruling Out the Massless Up-Quark Solution to the Strong CP Problem by Computing the Topological Mass Contribution with Lattice QCD
• Scale setting the Möbius Domain Wall Fermion on gradient-flowed HISQ action using the omega baryon mass and the gradient-flow scales $t_0$ and $w_0$
• Hyperon Axial Charges in Two-Flavor Chiral Perturbation Theory
• Chiral extrapolation of baryon mass ratios
• Lattice QCD study of the elastic and transition form factors of charmed baryons
• Connected Parts of Decuplet Electromagnetic Properties
• Consistency between SU(3) and SU(2) chiral perturbation theory for the nucleon mass
• Hyperon Electromagnetic Properties in Two-Flavor Chiral Perturbation Theory
• Kaon Thresholds and Two-Flavor Chiral Expansions for Hyperons
• Simulation of an ensemble of $N_f=2+1+1$ twisted mass clover-improved fermions at physical quark masses
• Meson-Baryon Scattering Parameters from Lattice QCD with an Isospin Chemical Potential
• Towards a direct lattice calculation of m_d - m_u
• Topics in Lattice QCD and Effective Field Theory
• Lattice QCD Study of Positive Parity Dibaryons with Maximal Charm and Strangeness
• Sigma-terms and axial charges for hyperons and charmed baryons