Baryons and Chiral Symmetry

Abstract

The relevance of chiral symmetry in baryons is highlighted in three examples in the nucleon spectroscopy and structure. The first one is the importance of chiral dynamics in understanding the Roper resonance. The second one is the role of chiral symmetry in the lattice calculation of $\pi N\sigma$ term and strangeness. The third one is the role of chiral $U(1)$ anomaly in the anomalous Ward identity in evaluating the quark spin and the quark orbital angular momentum. Finally, the chiral effective theory for baryons is discussed.

arXiv commentTo appear in G.E. Brown Memorial Volume

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Cited by in corpus (8)

• Three pion spectrum in the $I=3$ channel from lattice QCD
• Nucleon-to-Roper electromagnetic transition form factors at large-$Q^2$
• The S- and P-wave low-lying baryons in the chiral quark model
• Roper-like resonances with various flavor contents and their two-pion emission decays
• Roper State from Overlap Fermions
• Theoretical tools for neutrino scattering: interplay between lattice QCD, EFTs, nuclear physics, phenomenology, and neutrino event generators
• Role of chiral symmetry in the nucleon excitation spectrum
• A lattice QCD study of pion-nucleon scattering in the Roper channel