Can ${\Omega }^{-}\to {\Xi }^{-}\gamma$ be sensitive to new physics beyond the Standard Model ?

Abstract

We investigate the impact of new physics beyond the Standard Model to the $s\to d\gamma$ process, which is responsible for the short-distance contribution to the radiative decay $\Otogamma$. We study three representative extensions of the Standard Model, namely a one-family technicolor model, a two Higgs doublet model and a model containing scalar leptoquarks. When constraints arising from the observed $b\to s\gamma$ transition and the upper limit on $D^0-{\bar{D}}^0$ mixing are taken into account, we find no significant contributions of new physics to the $s\to d\gamma$ process.

9 pages, RevTex, no figures

References in corpus (8)

• Theoretical Uncertainties and Phenomenological Aspects of $B\to X_s\gamma$ Decay
• Model independent constraints on leptoquarks from rare processes
• Can $b\to s\gamma$ Close the Supersymmetric Higgs Production Window?
• Radiative Weak Decays of Charm Mesons
• Long Distance Contribution to $s\to d\gamma$ and Implications for ${\Omega }^{-}\to {\Xi }^{-}\gamma ,B_s\to B_d^{\ast }\gamma$ and $b\to s\gamma$
• Constraints on Masses of Charged PGBs in Technicolor Model from Decay $b\to s\gamma$
• New Upper Limit for the Branching Ratio of the Omega- to Xi- gamma Radiative Decay
• A QCD Sum Rule Approach to the $s\to d\gamma$ Contribution to the ${\Omega }^{-}\to {\Xi }^{-}\gamma$ Radiative Decay

Cited by in corpus (2)

• New Physics and Short-Distance s->d gamma Transition in Omega^- -> Cascade^- gamma Decay
• Weak Coupling Phases of the Attractive $t-t^{\prime }$ Hubbard Model at the Van Hove Filling