Open Access
Two-loop contributions to electroweak precision observables in the MSSM
J. Haestier,D. Stöckinger,Georg Weiglein,S. Heinemeyer +3 more
- 24 Jun 2005
pp 0611
TL;DR: The evaluation of the two-loop MSSM contributions to the electroweak precision observables M_W and s_w^eff at order(alpha_t^2), order( alpha_t alpha_b), order (alpha_b^2) is presented in this article.
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Abstract: The evaluation of the two-loop MSSM-contributions to the electroweak precision observables M_W and s_w^eff at order(alpha_t^2), order(alpha_t alpha_b), order(alpha_b^2) is presented. These contributions enter via Delta(rho), and it is explained in detail how one can retain the true, non-vanishing value of the MSSM Higgs boson mass M_h in spite of using the gauge-less limit in the calculation. The numerical results can be sizeable, in particular for strong squark mixing. By comparing the results in the on-shell and DR-bar renormalization schemes, the remaining theoretical uncertainty is found to be small.
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References
The snowmass Points and slopes: benchmarks for SUSY searches
Benjamin C. Allanach,Marco Battaglia,G.A. Blair,Marcela Carena,A. De Roeck,Athanasios Dedes,Abdelhak Djouadi,D. W. Gerdes,N. Ghodbane,John F. Gunion,Howard E. Haber,Tao Han,Sven Heinemeyer,JoAnne L. Hewett,I. Hinchliffe,J. Kalinowski,Heather E. Logan,Stephen P. Martin,Stephen P. Martin,H. U. Martyn,Konstantin Matchev,Konstantin Matchev,Stefano Moretti,Filip Moortgat,Gudrid Moortgat-Pick,Stephen Mrenna,U. Nauenberg,Yasuhiro Okada,Keith A. Olive,Werner Porod,Werner Porod,Michael Schmitt,Shufang Su,Carlos E. M. Wagner,Carlos E. M. Wagner,Georg Weiglein,James D. Wells,G. W. Wilson,Peter M. Zerwas +38 more
TL;DR: The "Snowmass Points and Slopes" (SPS) as mentioned in this paper are a set of benchmark points and parameter lines in the MSSM parameter space corresponding to different scenarios in the search for Supersymmetry at present and future experiments.