Measurement of the Λ0b→Λ(1520)μ+μ− Differential Branching Fraction

LHCb collaboration, R.H. O'Neil, M. Richardson-Slipper, C. Vrahas

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Abstract / Description of output

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.
Original languageEnglish
Article number151801
Pages (from-to)1-12
Number of pages12
JournalPhysical Review Letters
Issue number15
Publication statusPublished - 10 Oct 2023

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