TY - JOUR

T1 - Phenomenology of minimal supergravity with vanishing A and B soft supersymmetry-breaking parameters

AU - Endo, Motoi

AU - Matsumura, Motoaki

AU - Yamaguchi, Masahiro

N1 - Funding Information:
We would like to thank M. Kakizaki and K. Yoshioka for useful discussions. This work was supported in part by the Grant-in-aid from the Ministry of Education, Culture, Sports, Science and Technology, Japan (No. 12047201).

PY - 2002/9/19

Y1 - 2002/9/19

N2 - 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 β. The ansatz survives the Higgs mass bound as well as the b → sγ 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.

AB - 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 β. The ansatz survives the Higgs mass bound as well as the b → sγ 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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U2 - 10.1016/S0370-2693(02)02500-5

DO - 10.1016/S0370-2693(02)02500-5

M3 - Article

AN - SCOPUS:0037136608

VL - 544

SP - 161

EP - 166

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 1-2

ER -