| THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
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The Prediction of Possible Nonstrange Dibaryon |
| DAI Lian-Rong** |
Department of Physics, Liaoning Normal University, Dalian 116029
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| Cite this article: |
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DAI Lian-Rong 2014 Chin. Phys. Lett. 31 011401 |
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Abstract Recently, the mixing of scalar mesons was introduced into the chiral SU(3) quark model and also dynamically applied to the baryon-baryon system. The results show that the nucleon-nucleon and hyperon-nucleon scattering data can be reasonably described for different mixing cases, one is ideal mixing and the other is θs=19° mixing. In the present work, by taking the above parameters, the possible candidate of deltaron bound state is further predicted. We find that the contributions from σ and ε exchange to binding energy of deltaron are different, that the contribution from ε exchange is negligible, and that σ exchange is dominant. We also find that the binding energy of deltaron is very stable, around several tens of MeV, no matter what kind of mixing is adopted.
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Received: 24 September 2013
Published: 28 January 2014
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