Oct 24 – 26, 2018
US/Central timezone

Measurement of the Shape of the Lambda_b -> Lambda_c mu nu Differential Decay Rate

Oct 25, 2018, 4:15 PM
IARC (Fermilab)



Pine St and Kirk Rd Batavia, Illinois


Scott Edward Ely (Syracuse University)


A measurement of the shape of the differential decay rate and associ- ated Isgur-Wise function for the decay Λ0b → Λc + μ−ν has been performed using data corresponding to 3fb−1 collected with the LHCb detector using proton-proton collisions. The Λ+c μ−ν final states are reconstructed by the detection of a muon and a Λ+c baryon decaying to pK−π+, and the decay Λ0b → Λ+c π+π−μ−ν is used to determine contributions from Λ0b → Λc ∗+ μ−ν 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.

Presentation materials