1996/11/22 by W. de Boer, de Boer, W.
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9611395
4 pages, to be published in the Proceedings of the XXVIII Int. Conf. on High Energy Physics, 25-31 July 1996, Warsaw, Poland
arxiv created 1996/11/22 · openalex publication_date 1996/11/22 · arxiv updated 2016/09/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A program including all radiative corrections to the MSSM at the same level as the radiative corrections to the SM has been developed and used to perform global fits to all electroweak data from LEP, SLC and the Tevatron and the radiative b->sgamma decay from CLEO. Values of the strong coupling constant at the MZ scale and sin2θ_MS are derived, both in the SM and MSSM. Recent updates on ectroweak data, which have been presented at the Warsaw Conference in summer 1996, reduce the Rb anomaly from a 3.2 σto a 1.8 σeffect. In addition, the b→ sγ decay is 30% below the SM prediction. In the MSSM light stops and light charginos increase Rb and decrease the b→ sγ rate, so both observations can be brought into agreement with the MSSM for the same region of parameter space. However, the resulting χ2 value for the MSSM fits is only marginally lower and in addition, the splitting in the stop sector has to be unnaturally high.