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Free keywords:
Flavour Physics, Particle and Resonance Production, Rare Decay, Hadron-Hadron Scattering
MPINP:
LHCb - Abteilung Hinton
Abstract:
The resonant structure of the radiative decay Λb0 → pK−γ in the region of proton-kaon invariant-mass up to 2.5 GeV/c2 is studied using proton-proton collision data recorded at centre-of-mass energies of 7, 8, and 13 TeV collected with the LHCb detector, corresponding to a total integrated luminosity of 9 fb−1. Results are given in terms of fit and interference fractions between the different components contributing to this final state. Only Λ resonances decaying to pK− are found to be relevant, where the largest contributions stem from the Λ(1520), Λ(1600), Λ(1800), and Λ(1890) states.