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Study of $Noverline{N}$ interaction with channel-coupling in constituent quark models
Ping Jialun 1,Huang Hongxia 1,Pang Hourong 2
1.School of Physical Science and Technology,Nanjing Normal University
2.Department of Physics, Southeast University
*Correspondence author
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Funding: none
Opened online: 3 March 2011
Accepted by: none
Citation: Ping Jialun,Huang Hongxia,Pang Hourong.Study of $Noverline{N}$ interaction with channel-coupling in constituent quark models[OL]. [ 3 March 2011] http://en.paper.edu.cn/en_releasepaper/content/4412361
 
 
The nucleon-antinucleon interaction is studied by usingresonating-group-method in the framework of twoconstituent quark models: the chiral quark model and thequark delocalization color screening model, which can give agood description of baryon properties and nucleon-nucleoninteraction. The experimental dataof proton-antiproton $S$-wave elastic scattering cross sectioncan be well reproduced by adjusting properlyone-gluon annihilation coupling constant. With thefixed model parameters, a dynamical calculation of allpossible $S$-wave nucleon-antinucleon states withchannel-coupling is performed. The calculated results show thatthe effect of channel-coupling is not strong to form a boundstate as indicated by a strong enhancement atthreshold of $par{p}$ in $J/psi$ radiative decay.
Keywords:hadron physics; nucleon-antinucleon interaction; $par{p}$ threshold enhancement; constituent quark model
 
 
 

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