Weak Gamma Decays of Hyperons

Abstract

\V e investigate weak gamma decays of hyperons. The gamma rays can have directional asymmetry and polarization. They depend on the asymmetry parameter a. Assuming RP in variance, SU (3) and the pole approximation, we discuss two models ; (i) the process, Hyperon->Baryon+ p 0 (or wO) is followed by pD->y(or wD-o.y); (ii) the decay amplitude must transform like A 1 1 -l/2 A 2 2-l/2 A 3 3 • Under one additional condition, the model (i) is reduced to the model (ii). In the model (ii), the decay rate w (1:+-~f..> + r) has the largest value among many possible weak gamma decays of hyperons.

Systematic Analysis of the Weak γ Decay of Hyperons

“…2 l Recently, Itoh has investigated the weak r decay of hyperons in the symmetry approach, assuming RP invariance of SU (3) and the pole approximation. 3 l…”