Λ(1405)production in theπ−p→K0πΣreaction

2003/07/31 by T. Hyodo, Tetsuo Hyodo, A. Hosaka +5 · 4 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevc.68.065203

published as Phys.Rev.C68:065203,2003 · RevTeX4, 10 pages, 8 figures, 2 tables, Version to appear in Phys. Rev. C

arxiv created 2003/10/15 · openalex publication_date 2003/12/18 · arxiv updated 2011/02/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We discuss the mechanisms that lead to \ensuremathΛ(1405) production in the \ensuremathπ^\ensuremath-p\ensuremath→K⁰\ensuremathπ\ensuremathΣ reaction. The problem has gained renewed interest after different works converge to the conclusion that there are two resonances around the region of 1400\phantom\rule0.3em0exMeV, rather than one, and that they couple differently to the \ensuremathπ\ensuremathΣ and KN channels. We look at the dynamics of that reaction and find two mechanisms which eventually filter each one of the resonances, leading to very different shapes of the \ensuremathπ\ensuremathΣ invariant mass distributions. The combination of the two mechanisms leads to a shape of this distribution compatible with the experimental measurements.

Citations

• Chiral symmetry amplitudes in the S-wave isoscalar and isovector channels and the σ, f0(980), a0(980) scalar mesons
• Chiral perturbation theory
• Chiral Dynamics in Nucleons and Nuclei
• Review of particle properties

Cited by

• Photoproduction of K∗ for the study of Λ(1405)
• Unitary coupled channel analysis of theΛ(1520)resonance
• The N*(1710) as a resonance in the ππN system
• On the nature of the and from their behavior in chiral dynamics