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Aaij, R.; Adlarson, Patrik; Alexander, M.; Bobulska, D.; Douglas, L.; Eklund, Lars; Friday, D. A.; Grillo, L.; Kupsc, Andrzej; Longstaff, I.; McHugh, N. T.; Petric, M.; Schiller, M.; Soler, F. J. P.; Spradlin, P.; Whitehead, M.; Zunica, G.
Physical review letters, 2023, Letnik: 131, Številka: 15Journal Article
The branching fraction of the rare decay Lambda(0 )(b)-> Lambda(1520)mu(+)mu(-) is measured for the first time, in the squared dimuon mass intervals q(2), excluding the J/psi and psi(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 q(2) interval, q(2) > 15.0 GeV2/c(4), where theoretical predictions have the smallest model dependence, agrees with the predictions.
