A search for the decays Bs 0→μ +μ -μ +μ - and B 0→μ +μ -μ +μ - is performed using data, corresponding to an integrated luminosity of 1.0 fb -1, collected with the LHCb detector in 2011. The number of candidates observed is consistent with the expected background and, assuming phase-space models of the decays, limits on the branching fractions are set: B(Bs 0→μ +μ -μ +μ -)<1.6(1.2) ×10 -8 and B(B 0→μ +μ -μ +μ -)<6.6(5.3)×10 -9 at 95% (90%) confidence level. In addition, limits are set in the context of a supersymmetric model which allows for the B(s) 0 meson to decay into a scalar (S) and pseudoscalar particle (P), where S and P have masses of 2.5 GeV/c and 214.3 MeV/c, respectively, both resonances decay into μ +μ -. The branching fraction limits for these decays are B(Bs 0→SP)<1.6(1.2)×10 -8 and B(B 0→SP)<6.3(5.1)×10 -9 at 95% (90%) confidence level.
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)