Weak Radiative Decays of Beauty Baryons

Abstract

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 $10^{-15}\mathrm{MeV}$ for ${\Lambda }_b\to \Lambda \gamma$ and ${\Xi }_b\to \Xi \gamma$ and of the oder of $10^{-13}\mathrm{MeV}$ for ${\Omega }_b\to \Omega \gamma$. The ${\Omega }_b$ radiative decay is thus expected at the sizable branching ratio of approximately $10^{-4}$.

10 pages, latex, no figures

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Cited by in corpus (4)

• Heavy-to-light baryonic form factors at large recoil
• Penguin-Induced Radiative Baryonic B Decays
• Weak Radiative Decays of Anti-triplet Bottomed Baryons in Light-Front Quark Model
• Dipole coefficients in B -> X_s gamma in supersymmetry with large \tanβand explicit CP violation