TY - JOUR
T1 - Measurement of the Λ0b→Λ(1520)μ+μ− Differential Branching Fraction
AU - LHCb collaboration
AU - Barter, William
AU - Clarke, P.E.L.
AU - Gambetta, S.
AU - Muheim, F.
AU - Needham, M.
AU - Williams, Mark
AU - Betti, Federico
AU - Currie, Robert
AU - Eisenhardt, S.
AU - Lavra, Lais Soares
AU - Federica, Oliva
AU - Ozcelik, Ozlem
AU - Sarpis, Gediminas
AU - O'Neil, R.H.
AU - Richardson-Slipper, M.
AU - Vrahas, C.
PY - 2023/10/10
Y1 - 2023/10/10
N2 - The branching fraction of the rare decay Λ0b→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.
AB - The branching fraction of the rare decay Λ0b→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.
U2 - 10.1103/PhysRevLett.131.151801
DO - 10.1103/PhysRevLett.131.151801
M3 - Article
SN - 0031-9007
VL - 131
SP - 1
EP - 12
JO - Physical Review Letters
JF - Physical Review Letters
IS - 15
M1 - 151801
ER -