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- W2462214562 abstract "The P-wave dynamical generated state, as well as S-wave state, from hadron-hadron interactions through exchanging light hadron is investigated explicitly to understand the properties, especially spin-parities, of the hidden-charmed exotic hadrons observed recently at LHCb. In a toy model of two-channel scattering of scalar mesons, it is shown that P-wave state is closer to threshold than S-wave state, and has a relatively small width. An important observation is that the peak of a P-wave state has a height similar to a S-wave state. It suggests P-wave state is even easer to observe in experiment than S-wave state if the width is not very small. The two LHCb hidden-charmed pentaquarks are studied in this scheme. The $P_c(4380)$ and the $P_c(4450)$ can be assigned as $3/2^-$-wave and $5/2^+$-wave states dynamically generated from the $bar{D}^*Sigma_c$ interaction, respectively. The peak for the $P_c(4380)$ in the $J/psi p$ invariant mass spectrum is broader but lower than the peak of the $P_c(4450)$, which is consistent with the LHCb experiment. Besides, the spin-parities of the $Y(4140)$ and the $Y(4274)$ reported by LHCb are also discussed and found it possible to be reproduced in current scheme." @default.
- W2462214562 created "2016-07-22" @default.
- W2462214562 creator A5071521423 @default.
- W2462214562 date "2016-07-12" @default.
- W2462214562 modified "2023-09-27" @default.
- W2462214562 title "P-wave dynamical generated state and LHCb hidden-charmed pentaquarks" @default.
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