In this work,we investigate the SU(3)flavor symmetry,heavy quark spin symmetry and their breaking effects in the di-meson systems.We prove the existence of the[D_(s)(*)D_(s)(*)]^(0++),[D_(s)(*)D_(s)(*)]^(1++),and[D_(s...In this work,we investigate the SU(3)flavor symmetry,heavy quark spin symmetry and their breaking effects in the di-meson systems.We prove the existence of the[D_(s)(*)D_(s)(*)]^(0++),[D_(s)(*)D_(s)(*)]^(1++),and[D_(s)(*)D_(s)(*)]^(1++)bound states as the consequence of two prerequisites in the SU(3)flavor symmetry and heavy quark spin symmetry.The first prerequisite,the X(3872)as the weakly D*D=DD*bound state is supported by its mass and decay branching ratios.The second prerequisite,the existence of the DsDs[D_(s)(*)D_(s)(*)]^(0++)bound state is supported by the lattice QCD calculation and the observation of X_(c0)(3930)by the LHCb Collaboration.We hope the future experimental analyses can search for these bound states in the B→[D_(s)(*)D_(s)(*)]h processes(h denotes the light hadrons).The[D_(s)(*)D_(s)(*)]^(0++)bound state is also expected to be reconstructed in the J/ψФinal state in the B→//ψФK decay.展开更多
基金This project was supported by the National Nat-ural Science Foundation of China(11975033 and 12070131001)This project was also funded by the Deutsche Forschungsgemeinschaft(DFG,German Research Foundation,Project ID 196253076-TRR 110).
文摘In this work,we investigate the SU(3)flavor symmetry,heavy quark spin symmetry and their breaking effects in the di-meson systems.We prove the existence of the[D_(s)(*)D_(s)(*)]^(0++),[D_(s)(*)D_(s)(*)]^(1++),and[D_(s)(*)D_(s)(*)]^(1++)bound states as the consequence of two prerequisites in the SU(3)flavor symmetry and heavy quark spin symmetry.The first prerequisite,the X(3872)as the weakly D*D=DD*bound state is supported by its mass and decay branching ratios.The second prerequisite,the existence of the DsDs[D_(s)(*)D_(s)(*)]^(0++)bound state is supported by the lattice QCD calculation and the observation of X_(c0)(3930)by the LHCb Collaboration.We hope the future experimental analyses can search for these bound states in the B→[D_(s)(*)D_(s)(*)]h processes(h denotes the light hadrons).The[D_(s)(*)D_(s)(*)]^(0++)bound state is also expected to be reconstructed in the J/ψФinal state in the B→//ψФK decay.
