%0 Journal Article %T Search for the rare decay B+ -> mu(+) mu(-) mu(+)nu(mu) %A LHCb Collaboration (Aaij, R. et al %A Garcia Martin, L. M. %A Henry, L. %A Jashal, B. K. %A Martinez-Vidal, F. %A Oyanguren, A. %A Remon Alepuz, C. %A Ruiz Vidal, J. %A Sanchez Mayordomo, C. %J European Physical Journal C %D 2019 %V 79 %N 8 %I Springer %@ 1434-6044 %G English %F LHCbCollaborationAaij_etal2019 %O WOS:000480778100002 %O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4110), last updated on Thu, 29 Aug 2019 09:53:14 +0000 %X A search for the rare leptonic decay B +. μ+ μ- μ+.mu is performed using proton- proton collision data corresponding to an integrated luminosity of 4.7 fb – 1 collected by the LHCb experiment. The search is carried out in the region where the lowest of the two μ+ μ- mass combinations is below 980 MeV/ c2. The data are consistent with the background- only hypothesis and an upper limit of 1.6x10 – 8 at 95% confidence level is set on the branching fraction in the stated kinematic region. %R 10.1140/epjc/s10052-019-7112-x %U https://arxiv.org/abs/1812.06004 %U https://doi.org/10.1140/epjc/s10052-019-7112-x %P 675 - 12pp