Axial charges of hyperons and charmed baryons using $N_f=2+1+1$ twisted mass fermions

Abstract

The axial couplings of the low lying baryons are evaluated using a total of five ensembles of dynamical twisted mass fermion gauge configurations. The simulations are performed using the Iwasaki gauge action and two degenerate flavors of light quarks, and a strange and a charm quark fixed to approximately their physical values at two values of the coupling constant. The lattice spacings, determined using the nucleon mass, are $a=0.082$ fm and $a=0.065$ fm and the simulations cover a pion mass in the range of about 210 MeV to 430 MeV. We study the dependence of the axial couplings on the pion mass in the range of about 210 MeV to 430 MeV as well as the $SU(3)$ breaking effects as we decrease the light quark mass towards its physical value.

34 pages, 17 figures

References in corpus (13)

• Big-Bang Nucleosynthesis
• Baryon spectrum with $N_f=2+1+1$ twisted mass fermions
• Nucleon isovector couplings from $N_f=2$ lattice QCD
• Light baryon masses with dynamical twisted mass fermions
• Spectroscopy of doubly-charmed baryons from lattice QCD
• Hadronic Molecular States Composed of Heavy Flavor Baryons
• First Calculation of Hyperon Axial Couplings from Lattice QCD
• Hyperons in Two Flavor Chiral Perturbation Theory
• Axial charges of octet and decuplet baryons
• SU(3)-flavour breaking in octet baryon masses and axial couplings
• Hyperon Axial Charges in Two-Flavor Chiral Perturbation Theory
• Chiral Corrections and the Axial Charge of the Delta
• Mass and axial charge of heavy baryons

Cited by in corpus (22)

• Low-lying baryon masses using $N_f=2$ twisted mass clover-improved fermions directly at the physical point
• Hadrons and Nuclei
• An accurate calculation of the nucleon axial charge with lattice QCD
• Octet baryon isovector charges from $N_f=2+1$ lattice QCD
• Scattering of charmed baryons on nucleons
• ${\Sigma }_{c}N$ interaction in chiral perturbation theory
• Baryon masses and σ-terms in SU(3) BChPT x 1/Nc
• Femtoscopic correlations and the ${\Lambda }_{c}N$ interaction
• Predictions for charmed nuclei based on $Y_{c}N$ forces inferred from lattice QCD simulations
• Axial-vector form factors of the baryon decuplet with flavor SU(3) symmetry breaking
• Quark spin content of SU(3) light and singly heavy baryons
• Baryon Chiral Perturbation Theory combined with the $1/{\mathbf{N}}_{\mathbf{c}}$ Expansion in SU(3) I: Framework
• Lattice-QCD Determination of the Hyperon Axial Couplings in the Continuum Limit
• $\Delta$-baryon axialvector and pseudoscalar form factors, and associated PCAC relations
• Towards modeling the short-range interactions of hidden/open charm pentaquark molecular states
• Investigations on the flavor-dependent axial charges of the octet baryons
• The chiral Lagrangian with three flavors and large-Nc sum rules
• Axial-vector charges of the spin ${\frac{1}{2}}^{+}$ and spin ${\frac{3}{2}}^{+}$ light and charmed baryons in the SU(4) chiral quark constituent model
• Low-energy constants from charmed baryons on QCD lattices
• Hyperon couplings from $N_f=2+1$ lattice QCD
• Partially conserved axial vector current and applications
• Structure of the $\Omega$ baryon and the kaon cloud