We analyze the inclusive semileptonic decays B --> X-S l(+)l(-) in the framework of the supersymmetric standard model with non-universal soft-breaking terms at GUT scale. We show that the general trend of universal and non-universal models is a decreasing of branching ratio (BR) and increasing of energy asymmetry (AS). However, only non-universal models can have chances to get very large enhancements in BR and AS, corresponding to large (negative) SUSY contributions to the b --> sgamma amplitude. (C) 2002 Elsevier Science B.V. All rights reserved.
On the B -> X-s l(+)l(-) decays in general supersymmetric models / Gabrielli, Emidio; S., Khalil. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 530:(2002), pp. 133-141. [10.1016/S0370-2693(02)01350-3]
On the B -> X-s l(+)l(-) decays in general supersymmetric models
GABRIELLI, Emidio;
2002-01-01
Abstract
We analyze the inclusive semileptonic decays B --> X-S l(+)l(-) in the framework of the supersymmetric standard model with non-universal soft-breaking terms at GUT scale. We show that the general trend of universal and non-universal models is a decreasing of branching ratio (BR) and increasing of energy asymmetry (AS). However, only non-universal models can have chances to get very large enhancements in BR and AS, corresponding to large (negative) SUSY contributions to the b --> sgamma amplitude. (C) 2002 Elsevier Science B.V. All rights reserved.Pubblicazioni consigliate
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