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    Confronting pentaquark photoproduction with new LHCb observations

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    The newly measurement of production fractions of PcP_c states by LHCb collaboration have put restriction on their branching ratios of J/ψpJ/\psi p decay, thus constraining their photoproduction in γp→J/ψp\gamma p\to J/\psi p reaction. We show the tension between LHCb results and the current experiments in search of PcP_c photoproduction. We also find that the present information of branching ratios of Pc→J/ψpP_c\to J/\psi p has already confronted sharply with the models which study the nature of PcP_c
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