Search for the decay $B_s^0 \to \mu \mu$ with the ATLAS detector

ATLAS collaboration (2869 authors)Aguilar-Saavedra, Juan AntonioAnjos, NunoCarvalho, JoãoCastro, Nuno FilipeConde Muiño, PatriciaDo Valle Wemans, AndréFiolhais, MiguelGomes, AgostinhoGonçalo, RicardoJorge, PedroLopes, LourencoMachado Miguens, JoanaMaio, AméliaManeira, JoséOliveira, Miguel AlfonsoOnofre, AntónioPalma, AlbertoPina, João AntonioPinto, BelmiroSantos, HelenaSaraiva, JoãoSilva, JoséVeloso, FilipeWolters, Helmut2019-02-032019-02-032013-07-16http://dx.doi.org/10.1016/j.physletb.2012.06.013http://hdl.handle.net/10400.26/26144A blind analysis searching for the decay Bs0 -> mumu has been performed using proton-proton collisions at a centre-of-mass energy of 7 TeV recorded with the ATLAS detector at the LHC. With an integrated luminosity of 2.4 fb^(-1) no excess of events over the background expectation is found and an upper limit is set on the branching fraction BR(Bs0 -> mu mu) < 2.2 (1.9) x10^(-8) at 95% (90%) confidence level.engSearch for the decay $B_s^0 \to \mu \mu$ with the ATLAS detectorjournal article2019-02-03