Hadrons made by diquark-antidiquark pairs(tetraquarks)are held together by QCD forces in an overall color singlet.As stated in the original proposals and similarly to baryons and qq mesons,tetraquarks form complete mu...Hadrons made by diquark-antidiquark pairs(tetraquarks)are held together by QCD forces in an overall color singlet.As stated in the original proposals and similarly to baryons and qq mesons,tetraquarks form complete multiplets of the flavour symmetry,SU(3)f.展开更多
Recently,the LHCb and BESⅢCollaborations provided results for two Z_(cs)tetraquarks and a P_(cs)pentaquark.These are hiddencharm four-and five-quark states,characterized by ccsn(ccns)and ccnns quark structures,respec...Recently,the LHCb and BESⅢCollaborations provided results for two Z_(cs)tetraquarks and a P_(cs)pentaquark.These are hiddencharm four-and five-quark states,characterized by ccsn(ccns)and ccnns quark structures,respectively,where the notation n indicates a u or d quark.展开更多
文摘Hadrons made by diquark-antidiquark pairs(tetraquarks)are held together by QCD forces in an overall color singlet.As stated in the original proposals and similarly to baryons and qq mesons,tetraquarks form complete multiplets of the flavour symmetry,SU(3)f.
基金supported by the Academy of Finland(Project No.320062)Istituto Nazionale di Fisica Nucleare(INFN),Italy。
文摘Recently,the LHCb and BESⅢCollaborations provided results for two Z_(cs)tetraquarks and a P_(cs)pentaquark.These are hiddencharm four-and five-quark states,characterized by ccsn(ccns)and ccnns quark structures,respectively,where the notation n indicates a u or d quark.
