QCD sum rules analysis yields mass predictions for the lowest decuplet hidden-charm pentaquarks with IJ^P = 1/2 1/2^-, 1/2 3/2^- and 1/2 5/2^- and suggests observation channels in Xi_b and Omega_b decays.
Aaij et al, Phys
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QCD sum rules reproduce the measured widths of Pc(4440) (17.4 vs 20.6 MeV) and Pc(4457) (5.6 vs 6.4 MeV) under a molecular assignment, and predict widths of roughly 98, 127 and 78 MeV for the unobserved isospin cousins Pc(4410), Pc(4470) and Pc(4620).
QCD sum rules applied to new color-bar3-bar3-bar3 currents give mass predictions for qssc anti-c pentaquarks with IJ^P = 1/2 1/2^-, 1/2 3/2^- and 1/2 5/2^-, indicating they are not scalar-diquark-scalar-diquark-antiquark states.
citing papers explorer
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Analysis of the hidden-charm pentaquark candidates in the $J/\psi \Xi^*$ mass spectrum via the QCD sum rules
QCD sum rules analysis yields mass predictions for the lowest decuplet hidden-charm pentaquarks with IJ^P = 1/2 1/2^-, 1/2 3/2^- and 1/2 5/2^- and suggests observation channels in Xi_b and Omega_b decays.
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Systematic study of the strong decays of the $P_c$ states and their possible isospin cousins via the QCD sum rules
QCD sum rules reproduce the measured widths of Pc(4440) (17.4 vs 20.6 MeV) and Pc(4457) (5.6 vs 6.4 MeV) under a molecular assignment, and predict widths of roughly 98, 127 and 78 MeV for the unobserved isospin cousins Pc(4410), Pc(4470) and Pc(4620).
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Analysis of the hidden-charm pentaquark candidates in the $J/\psi \Xi$ mass spectrum via the QCD sum rules
QCD sum rules applied to new color-bar3-bar3-bar3 currents give mass predictions for qssc anti-c pentaquarks with IJ^P = 1/2 1/2^-, 1/2 3/2^- and 1/2 5/2^-, indicating they are not scalar-diquark-scalar-diquark-antiquark states.