Octet and decuplet baryon $\sigma$-terms and mass decompositions

Abstract

We present a comprehensive analysis of the SU(3) octet and decuplet baryon masses and $\sigma$-terms using high-precision lattice QCD data and chiral SU(3) effective theory with finite range regularization. The effects of various systematic uncertainties, including from the scale setting of the lattice data and the regularization prescriptions, are quantified. We find the pion-nucleon and strange nucleon $\sigma$-terms to be ${\sigma }_{\pi N}=44(3)(3)$ MeV and ${\sigma }_{Ns}=50(6)(1)$ MeV, respectively. The results provide constraints on the energy-momentum tensor mass decompositions of the SU(3) octet and decuplet baryons, where we find the trace anomaly and quark/gluon energies decrease for strange baryons due to their larger strange $\sigma$-terms.

arXiv comment12 pages, 6 figures

References in corpus (48)

• FLAG Review 2019
• 2+1 Flavor Lattice QCD toward the Physical Point
• The chiral representation of the $\pi N$ scattering amplitude and the pion-nucleon sigma term
• A QCD Analysis of the Mass Structure of the Nucleon
• High-precision determination of the pion-nucleon $\sigma$-term from Roy-Steiner equations
• Octet baryon masses and sigma terms from an SU(3) chiral extrapolation
• Dark matter, the CMSSM and lattice QCD
• Light hadron spectroscopy using domain wall valence quarks on an Asqtad sea
• Proton Mass Decomposition from the QCD Energy Momentum Tensor
• BREAKUP OF HADRON MASSES AND ENERGY-MOMENTUM TENSOR OF QCD
• Flavour blindness and patterns of flavour symmetry breaking in lattice simulations of up, down and strange quarks
• Standard Model anatomy of WIMP dark matter direct detection II: QCD analysis and hadronic matrix elements
• SU(3) Baryon Chiral Perturbation Theory and Long Distance Regularization
• Lattice computation of the nucleon scalar quark contents at the physical point
• On the hadron mass decomposition
• Convergence of chiral effective field theory
• Nucleon axial, tensor and scalar charges and $\sigma$-terms in lattice QCD
• Octet baryon masses in next-to-next-to-next-to-leading order covariant baryon chiral perturbation theory
• Quark and gluon contributions to the QCD trace anomaly
• Direct determinations of the nucleon and pion $\sigma$ terms at nearly physical quark masses
• Revisiting the proton mass decomposition
• The lowest-lying baryon masses in covariant SU(3)-flavor chiral perturbation theory
• Hyperon sigma terms for 2+1 quark flavours
• Mass of the H-dibaryon
• Sigma terms from an SU(3) chiral extrapolation
• Nuclear structure factors for general spin-independent WIMP-nucleus scattering
• Probing Light Dark Matter with a Hadrophilic Scalar Mediator
• Nuclear matrix elements from lattice QCD for electroweak and beyond-Standard-Model processes
• Scalar strangeness content of the nucleon and baryon sigma terms
• SU(2) and SU(3) chiral perturbation theory analyses on baryon masses in 2+1 flavor lattice QCD
• Octet Baryon Masses in Partially Quenched 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
• The energy-momentum tensor of spin-1 hadrons: formalism
• The pion-nucleon sigma term from lattice QCD
• The pion-nucleon $\sigma$ term from pionic atoms
• Chiral Extrapolation of Hadronic Observables
• Isovector EMC effect from global QCD analysis with MARATHON data
• Nuclear σ-terms and Scalar-Isoscalar WIMP-Nucleus Interactions from Lattice QCD
• Three-loop formula for quark and gluon contributions to the QCD trace anomaly
• Hadron Physics at J-PARC
• Finite-volume effects on octet-baryon masses in covariant baryon chiral perturbation theory
• Proton Mass Decomposition and Hadron Cosmological Constant
• Brief history of the pion-nucleon sigma term
• Strange quarks and lattice QCD
• Flavor decomposition of the pion-nucleon $\sigma$-term
• Octet and decuplet baryon self-energies in relativistic SU(3) chiral effective theory
• Bayesian Monte Carlo extraction of sea asymmetry with SeaQuest and STAR data

Cited by in corpus (1)

• Chiral Analysis of the Nucleon Mass and Sigma Commutator