Phenomenological study of two-meson couplings of Theta+
Abstract
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.
Keywords
Cite
@article{arxiv.hep-ph/0509104,
title = {Phenomenological study of two-meson couplings of Theta+},
author = {Tetsuo Hyodo and Atsushi Hosaka},
journal= {arXiv preprint arXiv:hep-ph/0509104},
year = {2014}
}
Comments
RevTeX4, 13 pages, 17 figures, 2 tables, Version to appear in Phys. Rev. C