Measurement of the shape of the Λ<sub>b</sub><SUP>0</SUP> →+ Λ<sub>c</sub><SUP>+</SUP> μ<SUP>-</SUP>(ν)over-barμ differential decay rate



Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, Ali, S
et al (show 793 more authors) (2017) Measurement of the shape of the Λ<sub>b</sub><SUP>0</SUP> →+ Λ<sub>c</sub><SUP>+</SUP> μ<SUP>-</SUP>(ν)over-barμ differential decay rate. PHYSICAL REVIEW D, 96 (11). 112005-.

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Abstract

A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay $\Lambda_b^0\to\Lambda_c^+\mu^-\overline{\nu}$ is reported, using data corresponding to $3 fb^{-1}$ collected with the LHCb detector in proton-proton collisions. The $\Lambda_c^+\mu^-\overline{\nu}$(+ anything) final states are reconstructed through the detection of a muon and a $\Lambda_c^+$ baryon decaying into $pK^-\pi^+$, and the decays $\Lambda_b^0\to\Lambda_c^+\pi^+\pi^-\mu^-\overline{\nu}$ are used to determine contributions from $\Lambda_b^0\to \Lambda_c^{\star+}\mu ^-\bar{\nu}$ 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.

Item Type: Article
Additional Information: published version, 24 pages, 5 figures, all figures and tables https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-016.html
Uncontrolled Keywords: hep-ex, hep-ex, hep-lat
Depositing User: Symplectic Admin
Date Deposited: 12 Jan 2018 10:44
Last Modified: 14 Oct 2023 18:55
DOI: 10.1103/PhysRevD.96.112005
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3015937