# Measurement of the shape of the $\Lambda_b^0\to\Lambda_c^+ \mu^- \overline{\nu}_{\mu}$ differential decay rate

Abstract : A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay Λb0→Λc+μ-ν¯μ is reported, using data corresponding to 3  fb-1 collected with the LHCb detector in proton-proton collisions. The Λc+μ-ν¯μ(+anything) final states are reconstructed through the detection of a muon and a Λc+ baryon decaying into pK-π+, and the decays Λb0→Λc+π+π-μ-ν¯μ are used to determine contributions from Λb0→Λc*+μ-ν¯μ 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.
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Article dans une revue
Phys.Rev.D, 2017, 96 (11), pp.112005. 〈10.1103/PhysRevD.96.112005〉
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https://hal.archives-ouvertes.fr/hal-01669729
Contributeur : Inspire Hep <>
Soumis le : jeudi 21 décembre 2017 - 00:16:09
Dernière modification le : mardi 13 mars 2018 - 01:40:33

### Citation

Roel Aaij, Bernardo Adeva, Marco Adinolfi, Ziad Ajaltouni, Simon Akar, et al.. Measurement of the shape of the $\Lambda_b^0\to\Lambda_c^+ \mu^- \overline{\nu}_{\mu}$ differential decay rate. Phys.Rev.D, 2017, 96 (11), pp.112005. 〈10.1103/PhysRevD.96.112005〉. 〈hal-01669729〉

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