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.

To appear in G.E. Brown Memorial Volume

References in corpus (9)

• Extraction of Spin-Dependent Parton Densities and Their Uncertainties
• Hadronic Uncertainties in the Elastic Scattering of Supersymmetric Dark Matter
• Analyses of pion-nucleon elastic scattering amplitudes up to $O(p^4)$ in extended-on-mass-shell subtraction scheme
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Cited by in corpus (1)

• Roper-like resonances with various flavor contents and their two-pion emission decays