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Correlating LHCb B_s^0 to \mu^+ \mu^- Results with the ATLAS-CMS Multijet Supersymmetry Search

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arxiv 1206.2633 v2 pith:DUIAF2F4 submitted 2012-06-12 hep-ph hep-ex

classification hep-phhep-ex
keywords lhcbmodelexcessesflippedmassmultijetno-scalerecent
verification ladder T0 review T1 audit T2 compute T3 formal
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We show that the No-Scale Flipped SU(5) construction is transparently consistent with recent LHCb results for B_s^0 to \mu^+ \mu^- decays, due primarily to suppression from the rather small value of tan\beta ~ 20 that is globally enforced across the model space. This fact should be interpreted in conjunction with the demonstrated evasion of mass limits from the ATLAS and CMS SUSY searches and the more important potential explanation of small observed excesses in the multijet data. The No-Scale Flipped SU(5) benchmark model that best fits these excesses has a gaugino mass scale of M_{1/2} = 708 GeV, which drives masses for the bino-dominated LSP m_\chi_1^0 = 143.4 GeV, light stop m_t1 = 786 GeV, gluino m_g = 952 GeV, and heavy squark m_uL = 1490 GeV. The corresponding total prediction for the rare B-decay of Br(B_s^0 to \mu^+ \mu^-) = 3.5 x 10^-9 suggests that the SUSY contribution may indeed be much smaller than that expected from the Standard Model in this framework, fitting quite comfortably within the very tightly constrained region remaining viable after the most recent LHCb measurements.

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