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Title: | Measurement of the Λb0 → J/ψΛ angular distribution and the Λb0 polarisation in pp collisions |
Author: | LHCb Collaboration Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Golobardes, Elisabet Graciani Díaz, Ricardo Graugés Pous, Eugeni Manera Escalero, R. Marin Benito, Carla Vázquez Gómez, Ricard Vilasis-Cardona, Xavier |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | 17-Jun-2020 |
Publisher: | Springer Verlag |
Abstract: | This paper presents an analysis of the Λ0b→ J/ψΛ angular distribution and the transverse production polarisation of Λ0b baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The measurements are performed using data corresponding to an integrated luminosity of 4.9 fb−1, collected with the LHCb experiment. The polarisation is determined in a fiducial region of Λ0b transverse momentum and pseudorapidity of 1 < pT < 20 GeV/c and 2 < η < 5, respectively. The data are consistent with Λ0b baryons being produced unpolarised in this region. The parity-violating asymmetry parameter of the Λ → pπ− decay is also determined from the data and its value is found to be consistent with a recent measurement by the BES III collaboration. |
Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP06(2020)110 |
It is part of: | Journal of High Energy Physics, 2020, num. 110 |
URI: | http://hdl.handle.net/2445/185289 |
Related resource: | https://doi.org/10.1007/JHEP06(2020)110 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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