Supersymmetry and Electroweak Leptonic Observables

Details Supersymmetry and Electroweak Leptonic Observables Supersymmetry and Electroweak Leptonic Observables

2001-06-05

arxiv.org/abs/hep-ph/0106056v2

Phys.Rev. D65 (2002) 033005

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pages, 12 figures. Minor corrections, references added, conclusions unchanged. To be published in PRD

Scientific paper

10.1103/PhysRevD.65.033005

We study vertex corrections to the leptonic electroweak observables in the general MSSM at tan(beta) < 35. In particular, we address the question of whether supersymmetry can be responsible for the observed 2 sigma deviation from the Standard Model prediction in the invisible width of the Z. We find that the presence of a light (around 100 GeV) chargino and sleptons hinted by the muon g-2 measurements makes the agreement with experiment slightly better and improves the electroweak fit.

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