The b--->sγ constraint in effective supergravities from string theory

Abstract

We study the constraints from the $b\to s\gamma$ decay in the parameter space of effective supergravities from orbifold string theory and with minimal supesymmetric particle content. Both the general dilaton-dominated universal scenario as well as a non-universal scenario for the soft terms are investigated. It is found that the recently reported CLEO upper and lower bounds constrain the parameter space of the models under scrutiny. In particular we find constraints on the values of the parameter $\tan \beta$ and the gluino masses. In this class of string scenarios the negative sign of the Higgs mixing parameter $\mu$, is phenomenologically preferred.

LaTeX 11 pages, figures uuencoded included in a separate file, some typos have been corrected,1 figure added

References in corpus (3)

• Observation of Top Quark Production in Pbar-P Collisions
• Effective Mu-Term in Superstring Theory
• Moduli Spaces and Target Space Duality Symmetries in $(0,2)Z_N$ Orbifold Theories with Continuous Wilson Lines

Cited by in corpus (7)

• Charged Higgs Mass Bounds from b -> s gamma in a Bilinear R-Parity Violating Model
• Nonperturbative corrections to moments of the decay B -> X_s l^+ l^-
• Sparticle spectrum and dark matter in type I string theory with an intermediate scale
• From $b\to s\gamma$ to the LSP Detection Rates in Minimal String Unification Models
• Phenomenological implications of moduli-dominant SUSY breaking
• Yukawa Unification in Moduli-dominant SUSY Breaking
• Dilaton domination in the MSSM and its singlet extensions