There may be sevenD^((*))Σ_(c)^((*))hadronic molecular states.We construct their corresponding interpolating currents and calculate their masses and decay constants using QCD sum rules.Based on these results,we calcu...There may be sevenD^((*))Σ_(c)^((*))hadronic molecular states.We construct their corresponding interpolating currents and calculate their masses and decay constants using QCD sum rules.Based on these results,we calculate their relative production rates inΛ^(0)_(b)decays using current algebra,that is,B(Λ^(0)_(b)→P_(c)K^(-)):B(Λ^(0)_(b)→P′_(c)K^(-)),where P_(c)and P′_(c)are two different states.We also study their decay properties via Fierz rearrangement and further calculate these ratios in the J/ψp mass spectrum,that is,B(Λ^(0)_(b)→P_(c)K^(-)→J/ψpK^(-)):B(Λ^(0)_(b)→P′_(c)K^(-)→J/ψpK^(-)).Our results suggest that theD*Σ^(*)_(c)molecular states of JP=1/2^(-)and 3/2^(-)may be observed in future experiments.展开更多
We systematically construct all the tetraquark currents/operators of J^PC=1^+− with the quark configurations[cq][cq],[cq][qc],and[cc][qq](q=u/d),and derive their relations through the Fierz rearrangement of the Dirac ...We systematically construct all the tetraquark currents/operators of J^PC=1^+− with the quark configurations[cq][cq],[cq][qc],and[cc][qq](q=u/d),and derive their relations through the Fierz rearrangement of the Dirac and color indices.Using the transformations of[qc][qc]→[cc][qq]and[cq][qc],we study decay properties of the Zc(3900)as a compact tetraquark state;while using the transformation of[cq][qc]→[cc][qq],we study its decay properties as a hadronic molecular state.展开更多
基金Supported by the National Natural Science Foundation of China (11722540, 12075019)the Jiangsu Provincial Double-Innovation Program (JSSCRC2021488)the Fundamental Research Funds for the Central Universities
文摘There may be sevenD^((*))Σ_(c)^((*))hadronic molecular states.We construct their corresponding interpolating currents and calculate their masses and decay constants using QCD sum rules.Based on these results,we calculate their relative production rates inΛ^(0)_(b)decays using current algebra,that is,B(Λ^(0)_(b)→P_(c)K^(-)):B(Λ^(0)_(b)→P′_(c)K^(-)),where P_(c)and P′_(c)are two different states.We also study their decay properties via Fierz rearrangement and further calculate these ratios in the J/ψp mass spectrum,that is,B(Λ^(0)_(b)→P_(c)K^(-)→J/ψpK^(-)):B(Λ^(0)_(b)→P′_(c)K^(-)→J/ψpK^(-)).Our results suggest that theD*Σ^(*)_(c)molecular states of JP=1/2^(-)and 3/2^(-)may be observed in future experiments.
基金Supported by the National Natural Science Foundation of China(11722540)。
文摘We systematically construct all the tetraquark currents/operators of J^PC=1^+− with the quark configurations[cq][cq],[cq][qc],and[cc][qq](q=u/d),and derive their relations through the Fierz rearrangement of the Dirac and color indices.Using the transformations of[qc][qc]→[cc][qq]and[cq][qc],we study decay properties of the Zc(3900)as a compact tetraquark state;while using the transformation of[cq][qc]→[cc][qq],we study its decay properties as a hadronic molecular state.
