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The resonant structure of the radiative decay b⁰ pK^- 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 resonances decaying to pK^- are found to be relevant, where the largest contributions stem from the (1520), (1600), (1800), and (1890) states.
Aaij et al. (Wed,) studied this question.
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