Phenomenological study of two-meson couplings of {theta}{sup +}
Journal Article
·
· Physical Review. C, Nuclear Physics
- Research Center for Nuclear Physics (RCNP), Ibaraki, Osaka 567-0047 (Japan)
We evaluate two-meson couplings of {theta}{sup +}, 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{sup P}=1/2{sup +} and 3/2{sup -}, 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}{sup -}p{yields}K{sup -}{theta}{sup +} and K{sup +}p{yields}{pi}{sup +}{theta}{sup +} are calculated. Substantial interference of two terms may occur in the reaction processes for the J{sup P}=1/2{sup +} case, whereas the interference effect is rather small for the 3/2{sup -} case.
- OSTI ID:
- 20699140
- Journal Information:
- Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 72; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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