New Upper Limit for the Branching Ratio of the Omega- to Xi- gamma Radiative Decay
arXiv:hep-ph/9404340 · doi:10.1103/PhysRevD.50.R18
Abstract
We have searched for the rare hyperon radiative decay Omega- to Xi- gamma, using the Fermilab Proton Center 375 GeV/c charged hyperon beam. Our measurement of the Omega- beam fraction at 13.6 m from production is (4.8 +_ 0.4)10**(-5). No signal was found and we determine a new upper limit of (4.6 x 10**-4) at 90% CL for the Omega- to Xi- gamma branching ratio.
10 pg, revtex file (2 figures available upon request), IFUSP/P-1104