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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/185289
Measurement of the Λb0 → J/ψΛ angular distribution and the Λb0 polarisation in pp collisions
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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.
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LHCb Collaboration, et al. Measurement of the Λb0 → J/ψΛ angular distribution and the Λb0 polarisation in pp collisions. Journal of High Energy Physics. 2020. Vol. 110. ISSN 1126-6708. [consulted: 20 of July of 2026]. Available at: https://hdl.handle.net/2445/185289