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arXiv · 0710.2972

Z Pole Observables in the MSSM

S. Heinemeyer·W. Hollik·A. M. Weber·G. Weiglein
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Abstract

We present the currently most accurate prediction of Z pole observables such as sin^2 theta_eff, Gamma_Z, R_b, R_l, and sigma^0_had in the Minimal Supersymmetric Standard Model (MSSM). We take into account the complete one-loop results including the full complex phase dependence, all available MSSM two-loop corrections as well as the full SM results. We furthermore include higher-order corrections in the MSSM Higgs boson sector, entering via virtual Higgs boson contributions. For Gamma(Z -> neutralino{1} neutralino{1}) we present a full one-loop calculation. We analyse the impact of the different sectors of the MSSM with particular emphasis on the effects of the complex phases. The predictions for the Z boson observables and M_W are compared with the current experimental values. Furthermore we provide an estimate of the remaining higher-order uncertainties in the prediction of sin^2 theta_eff.

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S. Heinemeyer, W. Hollik, A. M. Weber, G. Weiglein. 2008-06-05. Z Pole Observables in the MSSM. https://doi.org/10.1088/1126-6708%2F2008%2F04%2F039

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