Two-loop Barr-Zee type Contributions to $(g-2)_μ$ in the MSSM

Details Two-loop Barr-Zee type Contributions to $(g-2)_μ$ in the MSSM Two-loop Barr-Zee type Contributions to $(g-2)_μ$ in the MSSM

2001-04-23

arxiv.org/abs/hep-ph/0104225v2

Phys.Rev. D65 (2002) 075002

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 5 figures, references added

Scientific paper

10.1103/PhysRevD.65.075002

We consider the contribution of a two-loop Barr-Zee type diagram to $(g-2)_\mu$ in the minimal supersymmetric standard model (MSSM). At relatively large $\tan\beta$, we show that the contribution of light third generation scalar fermions and neutral CP-even Higgs, $h^0(H^0)$, can easily explain the very recent BNL experimental data. In our analysis $(g-2)_\mu$ prefers negative $A_{f}$ and positive $\mu$. It is more sensitive to the chirality flipping $h^0(H^0)\wt{f}_R^*\wt{f}_L$ rather than chirality conserving couplings.

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