Phenomenological Aspects of Heterotic Orbifold Models at One Loop

Details Phenomenological Aspects of Heterotic Orbifold Models at One Loop Phenomenological Aspects of Heterotic Orbifold Models at One Loop

2003-08-05

arxiv.org/abs/hep-ph/0308047v1

Eur.Phys.J.C47:481-505,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

47 pages, 14 figures

Scientific paper

10.1140/epjc/s2006-02541-7

We provide a detailed study of the phenomenology of orbifold compactifications of the heterotic string within the context of supergravity effective theories. Our investigation focuses on those models where the soft Lagrangian is dominated by loop contributions to the various soft supersymmetry breaking parameters. Such models typically predict non-universal soft masses and are thus significantly different from minimal supergravity and other universal models. We consider the pattern of masses that are governed by these soft terms and investigate the implications of certain indirect constraints on supersymmetric models, such as flavor-changing neutral currents, the anomalous magnetic moment of the muon and the density of thermal relic neutralinos. These string-motivated models show novel behavior that interpolates between the phenomenology of unified supergravity models and models dominated by the superconformal anomaly.

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