b→sνν¯decay in the MSSM: Implication ofb→sγat largetanβ

2007/09/30 by Youichi Yamada
Physics and Astronomy · #Black Holes and Theoretical Physics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.77.014025

published as Phys.Rev.D77:014025,2008 · 17 pages, references added, figures refined

arxiv created 2008/01/17 · openalex publication_date 2008/01/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The decay b\ensuremath→s\ensuremathν\ensuremathν is discussed in the minimal supersymmetric standard model with general flavor mixing for squarks, at large tan\ensuremathβ. In this case, in addition to the chargino loop contributions which were analyzed in previous studies, tan\ensuremathβ-enhanced contributions from the gluino and charged Higgs boson loops might become sizable compared with the standard model contribution, at least in principle. However, it is demonstrated that the experimental bounds on the new physics contributions to the radiative decay b\ensuremath→s\ensuremathγ should strongly constrain these contributions to b\ensuremath→s\ensuremathν\ensuremathν, especially on the gluino contribution. We also briefly comment on a possible constraint from the B_s\ensuremath→\ensuremathμ⁺\ensuremathμ^\ensuremath- decay.

Citations

• Rare decays in the quark model
• The Discovery Potential of a Super B Factory
• Physics at Super B Factory
• New constraints on SUSY flavour mixing in light of recent measurements at the Tevatron
• Finite supersymmetric threshold corrections to CKM matrix elements in the large tanβ regime
• Effects of Superheavy Quarks and Leptons in Low-Energy Weak Processes KL-> Formula, K+-> + Formula and K0 Formula0
• Right-handed currents in rare exclusive decays
• Averages of b-hadron Properties at the End of 2005