Phenomenological study of two-meson couplings ofΘ+

2005/09/30 by Tetsuo Hyodo, Atsushi Hosaka
Physics and Astronomy · #Baryon #Coupling (piping) #High-Energy Particle Collisions Research #Meson #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Quantum Chromodynamics and Particle Interactions #Scalar meson #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevc.72.055202

published as Phys.Rev.C72:055202,2005; Erratum-ibid.C72:069902,2005 · RevTeX4, 13 pages, 17 figures, 2 tables, Version to appear in Phys. Rev. C

arxiv created 2005/11/16 · openalex publication_date 2005/11/30 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We evaluate two-meson couplings of \ensuremathΘ⁺, using experimental information of nucleon resonances decaying into \ensuremathπ\ensuremathπN channels, in which the two pions are in scalar- and vector-type correlations. We examine two assignments of spin and parity of J^P=1/2⁺ and 3/2^\ensuremath-, for which the experimental spectra of known resonances with exotic baryons are properly reproduced by an octet-antidecuplet representation mixing scheme. With the obtained coupling constants, total cross sections of the reactions \ensuremathπ^\ensuremath-p\ensuremath→K^\ensuremath-\ensuremathΘ⁺ and K⁺p\ensuremath→\ensuremathπ⁺\ensuremathΘ⁺ are calculated. Substantial interference of two terms may occur in the reaction processes for the J^P=1/2⁺ case, whereas the interference effect is rather small for the 3/2^\ensuremath- case.

Citations

• Production of Θ+ hypernuclei with the (K+,π+) reaction
• ExoticΘ+baryon production induced by a photon and a pion
• Phenomenology of spin 3/2 baryons with pentaquarks
• Experimental Search for Pentaquarks
• On a Theory of Particles with Half-Integral Spin
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Θ+ hypernuclei