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Theb constraint in effective supergravities from string theory


We study the constraints from theb 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 tanβ and the gluino masses. In this class of string scenarios the negative sign of the Higgs mixing parameterμ, is phenomenologically preferred.

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Kraniotis, G.V. Theb constraint in effective supergravities from string theory. Z. Phys. C - Particles and Fields 71, 163–170 (1996).

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  • Heterotic String
  • Electroweak Scale
  • Soft Term
  • Gluino Mass
  • Breaking Term