Camboni, AlessandroComerma-Montells, A.Garrido Beltrán, LluísGraciani Diaz, RicardoGraugés Pous, EugeniMarin Benito, CarlaPicatoste Olloqui, EduardoPotterat, CédricRives Molina, Vicente JoséRuiz, Hugo (Ruiz Pérez)LHCb Collaboration2022-05-162022-05-162014-081126-6708https://hdl.handle.net/2445/185625The kinematic dependences of the relative production rates, fΛ0 b /fd, of Λ 0 b baryons and B0 mesons are measured using Λ 0 b → Λ + c π − and B0 → D+π − decays. The measurements use proton-proton collision data, corresponding to an integrated luminosity of 1 fb−1 at a centre-of-mass energy of 7 TeV, recorded in the forward region with the LHCb experiment. The relative production rates are observed to depend on the transverse momentum, pT, and pseudorapidity, η, of the beauty hadron, in the studied kinematic region 1.5 < pT < 40 GeV/c and 2 < η < 5. Using a previous LHCb measurement of fΛ0 b /fd in semileptonic decays, the branching fraction B(Λ 0 b → Λ + c π −) = 4.30 ± 0.03 +0.12 −0.11 ± 0.26 ± 0.21 × 10−3 is obtained, where the first uncertainty is statistical, the second is systematic, the third is from the previous LHCb measurement of fΛ0 b /fd and the fourth is due to the B0 → D+π − branching fraction. This is the most precise measurement of a Λ 0 b branching fraction to date.22 p.application/pdfengcc-by (c) Camboni, Alessandro et al., 2014https://creativecommons.org/licenses/by/4.0/HadronsGran Col·lisionador d'HadronsFísica de partículesExperimentsHadronsLarge Hadron Collider (France and Switzerland)Particle physicsExperimentsinfo:eu-repo/semantics/article6457522022-05-16info:eu-repo/semantics/openAccess