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Influence of Spin--Orbit Force on Nucleon--Nucleon Scattering in the Quark Delocalization Colour Screening Model |
HUANG Hong-Xia1;CHEN Ling-Zhi2;PANG Hou-Rong3;PING Jia-Lun1; WANG Fan2 |
1Department of Physics, Nanjing Normal University, Nanjing 2100972Department of Physics, Nanjing University, Nanjing 2100933Department of Physics, Southeast University, Nanjing 210094 |
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Cite this article: |
HUANG Hong-Xia, CHEN Ling-Zhi, PANG Hou-Rong et al 2008 Chin. Phys. Lett. 25 1617-1620 |
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Abstract The symmetric spin--orbit interactions of one-gluon-exchange and confinement are included in the nucleon--nucleon phase shift calculation in the framework of quark delocalization colour screening model. The spin--orbit interaction has little influence on D wave phase shift. For the triplet P waves, 3PT is in good agreement with the experimental data and 3PLS is attractive but not strong enough, whereas 3PC is too strongly repulsive. Our results indicate that the symmetric spin--orbit interaction of one-gluon-exchange and confinement potential cannot give a good description of the triplet P wave phase shifts. More sophisticated considerations, the delocalization depending on the relative orientation between two cluster, might be needed to improve the description of P-wave NN interaction.
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Keywords:
13.75.Cs
12.39.Fe
12.39.Jh
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Received: 24 January 2008
Published: 29 April 2008
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