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arXiv · hep-ph/9810266

Phenomenological viability of string and M-theory scenarios

J. A. Casas·A. Ibarra·C. Muñoz
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Abstract

We analyze the constraints that a correct phenomenology and the absence of dangerous charge and color breaking (CCB) minima or unbounded from below (UFB) directions impose on the parameter space of different superstring and M-theory scenarios. Namely, we analyze in detail the case where supersymmetry (SUSY) breaking is driven by non-vanishing dilaton and/or moduli F-terms in weakly and strongly coupled strings, and the specific case where the mechanism of SUSY breaking is gaugino condensation with or without the participation of non-perturbative contributions to the K{ä}hler potential. The results indicate that, only in some small windows of the parameter space all the previous tests are succesfully passed. We also discuss the impact of non-universality of the soft breaking terms on CCB/UFB bounds.

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J. A. Casas, A. Ibarra, C. Muñoz. 1998-10-06. Phenomenological viability of string and M-theory scenarios. https://doi.org/10.1016/s0550-3213(99)00065-6

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