Radiative Omega(-)->Xi(-)gamma decay and physics beyond the standard model

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Rosenfeld, R. [UNESP]
Barreiro, L. A.
Escobar, C. O.
Nielsen, M.

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American Physical Soc


We investigate the impact of new physics beyond the standard model to the s → dγ process, which is responsible for the short-distance contribution to the radiative decay Ω-Ξ-γ. 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→sγ transition and the upper limit on D0-D̄0 mixing are taken into account, we find no significant contributions of new physics to the s→dy process.



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Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 54, n. 5, p. 3645-3648, 1996.