Weak Radiative Decays of Beauty Baryons

Details Weak Radiative Decays of Beauty Baryons Weak Radiative Decays of Beauty Baryons

1996-06-16

arxiv.org/abs/hep-ph/9606343v1

Phys.Lett. B383 (1996) 351-354

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, latex, no figures

Scientific paper

10.1016/0370-2693(96)00747-2

Weak radiative decays of beauty baryons into strange baryons, induced by the electroweak penguin, are estimated by using a quark model approach. Relations between formfactors in the semileptonic and in the weak radiative decays are derived within the heavy quark effective theory. The partial decay widths are found to be of the order of $10^{-15}{\rm MeV}$ for $\Lambda_b\rightarrow\Lambda\gamma$ and $\Xi_b\rightarrow\Xi\gamma$ and of the oder of $10^{-13}{\rm MeV}$ for $\Omega_b\rightarrow\Omega\gamma$. The $\Omega_b$ radiative decay is thus expected at the sizable branching ratio of approximately $10^{-4}$.

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