Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-09-12
Phys.Rev. C72 (2005) 055202; Erratum-ibid. C72 (2005) 069902
Physics
High Energy Physics
High Energy Physics - Phenomenology
RevTeX4, 13 pages, 17 figures, 2 tables, Version to appear in Phys. Rev. C
Scientific paper
10.1103/PhysRevC.72.055202
We evaluate two-meson couplings of Theta+, using experimental information of nucleon resonances decaying into pi pi N 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^-, 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 pi- p -> K- Theta+ and K+ p -> pi+ Theta+ 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^- case.
Hosaka Atsushi
Hyodo Tetsuo
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