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A Preliminary Explanation for the Pc+ Pentaquark Found by LHCbPc +


We propose that the two resonant states of the recently found pentaquark Pc+ with masses of 4380 MeV and 4450 MeV are two states of the hadronic molecule cc uud with similar properties to those of the Karliner-Lipkin pentaquark. Applying the Morse molecular potential to the molecule its minimum size is estimated. If S states exist, the first two possible S states are suggested and their energies are estimated. It is shown that the coupling constant is close to that of charmonium, and this may mean Physics Beyond the Standard Model.



[Article published in January 2016]

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