Updated analysis of meson-nucleon sigma terms in the perturbative chiral quark model

Abstract

We present an updated analysis of meson-baryon sigma terms in the perturbative chiral quark model, which is based on effective chiral Lagrangian. The new feature concerns the inclusion of excited states in the quark propagator. Its influence on meson loops is shown to lead in particular for the pion-nucleon sigma term to an enhancement relevant for the current evaluation of this quantity. We also determine various flavor combinations of the scalar nucleon form factors and their respective low-momentum transfer limits.

arXiv comment26 pages, 10 figures, to be published in Phys Rev C

References in corpus (17)

• Baryon Chiral Perturbation Theory in Manifestly Lorentz Invariant Form
• An Effective Chiral Lagrangian Approach to Kaon-Nuclear Interactions: Kaonic atom and kaon condensation
• Nucleon mass, sigma term and lattice QCD
• $\pi N\sigma$ Term , $\bar{s}s$ in Nucleon, and Scalar Form Factor --- a Lattice Study
• Sigma-term physics in the perturbative chiral quark model
• Strange nucleon form factors in the perturbative chiral quark model
• Electromagnetic Structure of the Nucleon in the Perturbative Chiral Quark Model
• piN scattering and electromagnetic corrections in the perturbative chiral quark model
• The Nucleon Sigma Term from Threshold Parameters
• Electromagnetic couplings of the ChPT Lagrangian from the perturbative chiral quark model
• The sigma-term form factor of the nucleon in the large-Nc limit
• Electromagnetic nucleon-delta transition in the perturbative chiral quark model
• Strangeness in the Scalar Form Factor of the Nucleon
• Neutrino mediated muon--electron conversion in nuclei revisited
• Baryon magnetic moments and sigma terms in lattice-regularized chiral perturbation theory
• Sigma-terms in heavy baryon chiral perturbation theory revisited
• The dependence of the "experimental" pion-nucleon sigma term on higher partial waves

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• Quark scalar, axial, and pseudoscalar charges in the Schwinger-Dyson formalism
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• Pion-nucleon Sigma Term in the Global Color Model of QCD
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• $\Lambda$$\Lambda$ interactions in finite-density QCD sum rules
• Dependence of nucleon properties on pseudoscalar meson masses
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• Phenomenological analysis of nucleon strangeness and meson-nucleon sigma terms
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• Chiral Dynamics of Baryons in a Lorentz Covariant Quark Model
• Magnetic moments of S-shell pentaquarks in the constituent quark model
• Spectrum of the excited $N^{\ast }$ and ${\Delta }^{\ast }$ baryons in a relativistic chiral quark model