Phenomenology of Minimal Supergravity with Vanishing A and B Soft Supersymmetry-Breaking Parameters

Details Phenomenology of Minimal Supergravity with Vanishing A and B Soft Supersymmetry-Breaking Parameters Phenomenology of Minimal Supergravity with Vanishing A and B Soft Supersymmetry-Breaking Parameters

2002-04-30

arxiv.org/abs/hep-ph/0204349v3

Phys.Lett. B544 (2002) 161-166

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 3 figures

Scientific paper

10.1016/S0370-2693(02)02500-5

The ansatz of vanishing A and B parameters eliminates CP violating complex phases in soft supersymmetry-breaking parameters of the minimal supersymmetric standard model, and thus provides a simple solution to the supersymmetry CP problem. Phenomenological implications of this ansatz are investigated in the framework of minimal supergravity. We show that electroweak symmetry breakdown occurs, predicting relatively large \tan \beta. The ansatz survives the Higgs mass bound as well as the b \to s \gamma constraint if the universal gaugino mass is larger than 300 GeV. We also find that the supersymmetric contribution to the anomalous magnetic moment of muon lies in an experimentally interesting region of order 10^{-9} in a large portion of the parameter space.

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