QCD sum rules yield masses for I=0 negative-parity udsc c-bar pentaquarks that match the P_cs(4338) and P_cs(4459) states.
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QCD sum rules give total decay widths of 326 MeV for Z_c^- (0^{--}) and 92 MeV for Z_c^+ (0^{-+}) pseudoscalar hidden-charm tetraquarks.
QCD sum rules yield strong decay widths for Pc pentaquarks as molecular states that match experiment for known members and predict values for isospin cousins.
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.
QCD sum rules yield a total decay width of 61.5 ± 7.3 MeV for the [sc][s-bar c-bar] tetraquark that matches Y(4660) data, supporting that interpretation.
citing papers explorer
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Analysis of the hidden-charm pentaquark candidates in the $J/\psi \Lambda$ mass spectrum via the QCD sum rules
QCD sum rules yield masses for I=0 negative-parity udsc c-bar pentaquarks that match the P_cs(4338) and P_cs(4459) states.
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Two-body strong decays of the pseudoscalar hidden-charm tetraquark states via the QCD sum rules
QCD sum rules give total decay widths of 326 MeV for Z_c^- (0^{--}) and 92 MeV for Z_c^+ (0^{-+}) pseudoscalar hidden-charm tetraquarks.
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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 yield strong decay widths for Pc pentaquarks as molecular states that match experiment for known members and predict values for isospin cousins.
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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.
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Analysis of the strong decays of the $Y(4660)$ in tetraquark scenario via the QCD sum rules
QCD sum rules yield a total decay width of 61.5 ± 7.3 MeV for the [sc][s-bar c-bar] tetraquark that matches Y(4660) data, supporting that interpretation.