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Free keywords:
Hadron colliders, Bottom baryons, Branching fraction, Flavor changing neutral currents, Leptonic, semileptonic & radiative decays, Rare decays
MPINP:
LHCb - Abteilung Hinton
Abstract:
The branching fraction of the rare decay Λb0→Λ(1520)μ+μ− is measured for the first time, in the squared dimuon mass intervals q2, excluding the J/ψ and ψ(2S) regions. The data sample analyzed was collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to a total integrated luminosity of 9 fb−1. The result in the highest q2 interval, q2 > 15.0 GeV2/c4, where theoretical predictions have the smallest model dependence, agrees with the predictions.