On the sigma sigma term

2016/10/01 by Peter C. Bruns, Bruns, Peter C. · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Quantum and Classical Electrodynamics

paper · pdf · doi:10.48550/arxiv.1610.00119

openalex publication_date 2016/10/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We give some estimates for the light-quark mass dependence of the pole position of the sigma (f₀(500)) resonance in the complex energy plane, with the help of a chiral Lagrangian for the resonance field and some input from hadronic models constrained by Chiral Perturbation Theory and elastic unitarity. We also speculate on the fate of the sigma resonance when the quark masses become unphysically large.

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