@Article{LHCbCollaborationAaij_etal2018, author="LHCb Collaboration (Aaij, R. et al and Garcia Martin, L. M. and Henry, L. and Martinez-Vidal, F. and Oyanguren, A. and Remon Alepuz, C. and Ruiz Vidal, J. and Sanchez Mayordomo, C.", title="Evidence for the decay B-s(0) -> (K)over-bar(*0) mu(+)mu(-)", journal="Journal of High Energy Physics", year="2018", publisher="Springer", volume="07", number="7", pages="020--24pp", optkeywords="B physics; FCNC Interaction; Flavor physics; Hadron-Hadron scattering (experiments); Rare decay", abstract="A search for the decay B-s(0) -> (K) over bar (*0) mu(+) mu(-) is presented using data sets corresponding to 1.0, 2.0 and 1.6 fb(-1) of integrated luminosity collected during pp collisions with the LHCb experiment at centre-of-mass energies of 7, 8 and 13TeV, respectively. An excess is found over the background-only hypothesis with a significance of 3.4 standard deviations. The branching fraction of the B-s(0) -> (K) over bar (*0) mu(+) mu(-) decay is determined to be B(B-s(0) -> (K) over bar (*0) mu(+) mu(-)) = [2.9 +/- 1.0 (stat) +/- 0.2 (syst) +/- 0.3 (norm)] x 10(-8), where the first and second uncertainties are statistical and systematic, respectively. The third uncertainty is due to limited knowledge of external parameters used to normalise the branching fraction measurement.", optnote="WOS:000438135900001", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3658), last updated on Fri, 27 Jul 2018 12:36:20 +0000", issn="1029-8479", doi="10.1007/JHEP07(2018)020", opturl="http://arxiv.org/abs/1804.07167", opturl="https://doi.org/10.1007/JHEP07(2018)020", archivePrefix="arXiv", eprint="1804.07167", language="English" }