A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay Λ0b → Λ+c µ−νµ is reported, using data corresponding to 3 fb−1 collected with the LHCb detector in proton-proton collisions. The Λ+c µ−νµ(+ anything) final states are reconstructed through the detection of a muon and a Λ+c baryon decaying into pK−π+, and the decays Λ0b → Λ+c π+π−µ−νµ are used to determine contributions from Λ0b → Λ∗c+ µ−νµ decays. The measured dependence of the differential decay rate upon the squared four-momentum transfer between the heavy baryons, q2, is compared with expectations from heavy-quark effective theory and from unquenched lattice QCD predictions.
|Original language||English (US)|
|State||Published - Sep 6 2017|
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