PT Journal
AU LHCb Collaboration (Aaij, Rea
   Jaimes Elles, SJ
   Jashal, BK
   Martinez-Vidal, F
   Oyanguren, A
   Rebollo De Miguel, M
   Ruiz Vidal, J
   Sanderswood, I
TI Measurement of the Λb0 → Λ(1520)μ+μ- Differential Branching Fraction
SO Physical Review Letters
JI Phys. Rev. Lett.
PY 2023
BP 151801 - 12pp
VL 131
IS 15
DI 10.1103/PhysRevLett.131.151801
LA English
AB 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.
ER