Mixing induced CP asymmetries in b → sγ decay and spontaneous CP violation

Barenboim, Gabriela

doi:10.1016/s0550-3213(98)00538-0

Nuclear Physics B

1998

DOI: 10.1016/s0550-3213(98)00538-0

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Mixing induced CP asymmetries in b → sγ decay and spontaneous CP violation

Gabriela Barenboim

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2000

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Combined study ofb→sγand the muon anomalous magnetic moment in gauge-mediated supersymmetry breaking models

Mahanthappa

2000

Phys. Rev. D

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We study both the branching ratio for b → sγ decay and the muon anomalous magnetic moment, a µ ≡ (g − 2) µ /2, in the minimal supersymmetric standard model with gauge-mediated supersymmetry breaking. Combining new experimental data on a µ and the branching ratio for b → sγ, strong limits on the parameter space of these models are derived. We find that this combined study leads to much stronger constraints on the parameter space of the model than those from either b → sγ or a µ . In particular, the region of large tan β is extremely limited, which would have been otherwise allowed. We include the supersymmetric one-loop correction to the mass of b quark, m b , and find that in order to have a correct value of m b , the region of large tanβ and µ < 0 (in our convention) is not allowed in these models. The region of large tanβ and µ > 0 is also strongly constrained. We present bounds on supersymmetric particle masses as a function of tan β.

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Combined study ofb→sγand the muon anomalous magnetic moment in gauge-mediated supersymmetry breaking models

Mahanthappa

2000

Phys. Rev. D

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Mixing induced CP asymmetries in b → sγ decay and spontaneous CP violation

Cited by 1 publication

References 58 publications

Combined study ofb→sγand the muon anomalous magnetic moment in gauge-mediated supersymmetry breaking models

Combined study ofb→sγand the muon anomalous magnetic moment in gauge-mediated supersymmetry breaking models

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