By fitting the binding energies of four known pentaquarks to a solvable Yukawa-type potential, the paper obtains resonance poles about 100 MeV above threshold and assigns one of them to Pc(4440)+.
Prediction of na rrowN ∗ and Λ ∗ resonances with hidden charm above 4 GeV,
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Study on Pentaqaurks by Solving Schrodinger Equation in the Non-Hermitian Quantum Mechanics
By fitting the binding energies of four known pentaquarks to a solvable Yukawa-type potential, the paper obtains resonance poles about 100 MeV above threshold and assigns one of them to Pc(4440)+.