A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay Λ0b → Λc+ μ− anti-ν_μ is reported, using data corresponding to 3 fb^−1 collected with the LHCb detector in proton-proton collisions. The Λc+ μ− anti-ν_μ (+anything) final states are reconstructed through the detection of a muon and a Λc+ baryon decaying into p K− π+, and the decays Λ0b → Λc+ π+ π− μ− anti-ν_μ are used to determine contributions from Λ0b → Λc*+ μ− anti-ν_μ decays. The measured dependence of the differential decay rate upon the squared four-momentum transfer between the heavy baryons, q^2, is compared with expectations from heavy-quark effective theory and from unquenched lattice QCD predictions.

Measurement of the Shape of the Λ0b → Λc+ μ− anti-ν_μ Differential Decay Rate

Capriotti, L.;
2017

Abstract

A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay Λ0b → Λc+ μ− anti-ν_μ is reported, using data corresponding to 3 fb^−1 collected with the LHCb detector in proton-proton collisions. The Λc+ μ− anti-ν_μ (+anything) final states are reconstructed through the detection of a muon and a Λc+ baryon decaying into p K− π+, and the decays Λ0b → Λc+ π+ π− μ− anti-ν_μ are used to determine contributions from Λ0b → Λc*+ μ− anti-ν_μ decays. The measured dependence of the differential decay rate upon the squared four-momentum transfer between the heavy baryons, q^2, is compared with expectations from heavy-quark effective theory and from unquenched lattice QCD predictions.
2017
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3582697
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