典型文献
Covalent hadronic molecules induced by shared light quarks
文献摘要：
After examining Feynman diagrams corresponding to the(-D)(*)Σ(*)2,(-D)(*)∧c,D(*)(-K)*,and D(*)(-D)(*)hadronic molecular states,we propose a possible binding mechanism induced by shared light quarks.This mechanism is similar to the covalent bond in chemical molecules induced by shared electrons.We use the method of QCD sum rules to calculate its corresponding light-quark-exchange diagrams,and the obtained results indicate a model-independent hypothesis:the light-quark-exchange interaction is attractive when the shared light quarks are totally antisymmetric so they obey the Pauli principle.We build a toy model with four parameters to formulize this picture and estimate binding energies of some possibly-existing covalent hadronic molecules.A unique feature of this picture is that the binding energies of the(I)JP=(0)1+D(-B)*/D*(-B)hadronic molecules are much larger than those of the(I)JP=(0)1+DD*/(-B)(-B)* ones,while the(I)JP=(1/2)1/2+(-D)Σc/(-D)Σb/BΣc/BΣb hadronic molecules have similar binding energies.
文献关键词：
中图分类号：
作者姓名：
Hua-Xing Chen
作者机构：
School of Physics,Southeast University,Nanjing 210094,China
文献出处：
引用格式：
[1]Hua-Xing Chen-.Covalent hadronic molecules induced by shared light quarks)[J].理论物理,2022(12):62-86
A类：
formulize,1+DD
B类：
Covalent,hadronic,molecules,induced,by,shared,light,quarks,After,examining,Feynman,diagrams,corresponding,molecular,states,we,propose,possible,binding,mechanism,This,similar,covalent,bond,chemical,electrons,We,use,method,QCD,sum,rules,calculate,its,exchange,obtained,results,indicate,model,independent,hypothesis,interaction,attractive,when,totally,antisymmetric,they,obey,Pauli,principle,build,toy,four,parameters,this,picture,estimate,energies,some,possibly,existing,unique,feature,that,JP,much,larger,than,those,ones,while,2+,have
AB值：
0.530595
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