Relaxing b\to sγConstraints on the Supersymmetric Particle Mass Spectrum

Abstract

We consider the radiative decay b \to s γin a supersymmetric extension of the standard model of particle interactions, where the $b$-quark mass is entirely radiative in origin. This is accomplished by the presence of nonholomorphic soft supersymmetry breaking terms in the Lagrangian. As a result, the contributions to the b \to s γamplitude from the charged Higgs boson and the charginos/neutralinos are suppressed by 1/\tan^2βand {\cal O}(α/α_s) respectively, allowing these particles to be lighter than in the usual supersymmetric model. Their radiatively generated couplings differ from the usual tree-level ones and change the collider phenomenology drastically. We also study how this scenario may be embedded into a larger framework, such as supersymmetric SU(5) grand unification.

references added, version to be published in PLB

References in corpus (6)

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• Yukawa Unification, b --> s gamma and Bino-Stau Coannihilation
• Sparticle Mass Spectra from SO(10) Grand Unified Models with Yukawa Coupling Unification
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Cited by in corpus (6)

• The minimal U(1)' extension of the MSSM
• The Muon Anomalous Magnetic Moment from a Generic Charged Higgs with SUSY
• The Spectrum of the MSSM with Non-Standard Supersymmetry Breaking
• Phenomenological Issues in Supersymmetry with Non-holomorphic Soft Breaking
• The decay $b\to s\gamma$ in the presence of a constant antisymmetric tensor field
• Bounding the B_s -> gamma gamma decay from Higgs mediated FCNC transitions