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New constraints on supersymmetric models from b --> s gamma
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics.
2007 (English)In: Journal of High Energy Physics (JHEP), ISSN 1029-8479, Vol. 12, 026- p.Article in journal (Other (popular science, discussion, etc.)) Published
Abstract [en]

We provide an analysis of the parameter space of several supersymmetry breaking scenarios such as the minimal supergravity (mSUGRA) model and the non universal Higgs mass (NUHM) framework, as well as the Anomaly Mediated Supersymmetry Breaking (AMSB) and the Gauge Mediated Supersymmetry Breaking (GMSB) models, in the light of a novel observable in bsγ transitions, i.e. the isospin symmetry breaking in the exclusive BK*γ decays. We find that in many cases, this observable provides severe restrictions on the allowed parameter space regions for the mentioned models. Moreover, we provide a few examples of investigations of the physical masses of supersymmetric particles and search for the excluded values. The constraints from the branching ratio associated to bsγ are also presented here for all the examined parameter space regions. A comparison with Bs → μ+μ branching ratio has also been performed.

Place, publisher, year, edition, pages
2007. Vol. 12, 026- p.
Keyword [en]
Supersymmetry Breaking, Supersymmetry Phenomenology, Supersymmetric Standard Model
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-16974DOI: 10.1088/1126-6708/2007/12/026ISI: 000252246500026OAI: oai:DiVA.org:uu-16974DiVA: diva2:44745
Available from: 2008-06-11 Created: 2008-06-11 Last updated: 2010-01-15Bibliographically approved

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Mahmoudi, Farvah
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