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- W2182109754 abstract "The recent experimental results of LHCb collaboration suggested the existence of pentaquark states with charmonium. To understand the structure of the states, a dynamical calculation of 5-quark systems with quantum numbers $IJ^P=frac{1}{2}(frac{1}{2})^pm$, $frac{1}{2}(frac{3}{2})^pm$ and $frac{1}{2}(frac{5}{2})^pm$ is performed in the framework of chiral quark model with the help of gaussian expansion method. The results show that the negative parity states can be bound states while all of the positive parity states are the scattering states. The $P_c(4380)$ state is suggested to be the bound state of $Sigma^*_cD$. Although the energy of $Sigma_cD^*$ is very close to the mass of $P_c(4450)$, the inconsistent parity prevents the assignment. The calculated distances between quarks confirm the molecular nature of the states. Other five-quark bound states of the combination of $Sigma_cD$ and $Sigma^*_cD^*$ are also found in the region about 4.3GeV and 4.5GeV." @default.
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- W2182109754 date "2017-01-10" @default.
- W2182109754 modified "2023-10-16" @default.
- W2182109754 title "Structure of pentaquarks <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msubsup><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup></mml:mrow></mml:math> in the chiral quark model" @default.
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- W2182109754 doi "https://doi.org/10.1103/physrevd.95.014010" @default.
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