Heavy quark symmetries favor J^P = 1/2 for P_c c-bar(4440) and J^P = 3/2 for P_c c-bar(4457) as D-bar* Sigma_c molecules, allowing estimates of Xi_cc(*) Sigma_c(*) states and elimination of one spin option for P_c c-bar s(4338) and P_c c-bar s(4459).
Cleven.Systematic Study of Hadronic Molecules in the Heavy-Quark Sector
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Evaluating alternative spin scenarios of $P_{c\bar{c}}(4440)$ and $P_{c\bar{c}}(4457)$ using heavy quark symmetries
Heavy quark symmetries favor J^P = 1/2 for P_c c-bar(4440) and J^P = 3/2 for P_c c-bar(4457) as D-bar* Sigma_c molecules, allowing estimates of Xi_cc(*) Sigma_c(*) states and elimination of one spin option for P_c c-bar s(4338) and P_c c-bar s(4459).