2007/10/31 by F. Mahmoudi · 40 citations
Physics and Astronomy · #Anomaly (physics) #Black Holes and Theoretical Physics #Branching fraction #Cosmology and Gravitation Theories #Higgs boson #Minimal Supersymmetric Standard Model #Observable #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum mechanics #Statistics #Supergravity #Superpartner #Supersymmetry #Supersymmetry breaking #Symmetry breaking #hep-ph
paper · pdf · doi:10.1088/1126-6708/2007/12/026
published in Journal of High Energy Physics 2007(12), 026 (Springer Nature) · 16 pages, 11 figures (updated values for the b -> s gamma branching ratio, one figure added)
arxiv created 2007/12/06 · openalex publication_date 2007/12/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
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 b -> s gamma transitions, i.e. the isospin symmetry breaking in the exclusive B -> K* gamma 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 b -> s gamma are also presented here for all the examined parameter space regions. A comparison with Bs -> mu+ mu- branching ratio has also been performed.