OPPOSITE PARITY FERMION MIXING AND BARYONS 1/2±

2013/06/26 by A. E. Kaloshin, A. E. KALOSHIN, E. A. Kobeleva +3 · 1 citation
Physics and Astronomy · #Baryon #Baryon number #Fermion #Mixing (physics) #Neutrino Physics Research #Parity (physics) #Partial wave analysis #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1142/s0217732313501563

published in Modern Physics Letters A 28(34), 1350156 (World Scientific) · 11 pages, 8 figures

arxiv created 2013/06/26 · openalex publication_date 2013/10/04 · arxiv updated 2013/10/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We develop a variant of K-matrix, which includes the effect of opposite parity fermions (OPF) mixing, and apply it for description of πN partial waves S 11 and P 11 . OPF-mixing leads to appearance of negative energy poles in K-matrix and restoration of MacDowell symmetry, relating two partial waves. Joint analysis of PWA results for S 11 and P 11 confirms significance of this effect.

Citations

• Roper resonance and S11(1535) from lattice QCD
• Resolution of the multichannel anomaly in the extraction of S-matrix resonance-pole parameters
• What is the structure of the Roper resonance?
• Mesonic content of the nucleon and the Roper resonance