Resonances in radiative hyperon decaysPHYSICAL REVIEW D
AbstractThe importance of resonances for the radiative hyperon decays is examined in the framework of chiral perturbation theory. Low lying baryon resonances are included into the effective theory and tree contributions to these decays are calculated. We find significant contributions to both the parity-conserving and parity-violating decay amplitudes and a large negative value for the asymmetry parameter in polarized Σ+→pγ is found, in agreement with the experimental result αγpΣ+=-0.76±0.08.
Citation InformationB Borasoy and BR Holstein. "Resonances in radiative hyperon decays" PHYSICAL REVIEW D Vol. 59 Iss. 5 (1999)
Available at: http://works.bepress.com/barry_holstein/107/