Influence of SpinOrbit Force on NucleonNucleon Scattering in the Quark Delocalization C.pdf

CHIN.PHYS.LETT. Vol. 25, No. 5 (2008) 1617 Influence of Spin–Orbit Force on Nucleon–Nucleon Scattering in the Quark Delocalization Colour Screening Model 1 2 3 HUANG Hong-Xia() , CHEN Ling-Zhi() , PANG Hou-Rong() , PING Jia-Lun()1∗∗ , WANG Fan()2 1Department of Physics, Nanjing Normal University, Nanjing 210097 2Department of Physics, Nanjing University, Nanjing 210093 3Department of Physics, Southeast University, Nanjing 210094 (Received 24 January 2008) 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, 3 PT is in good agreement with the experimental data and 3 PLS is attractive but not strong enough, whereas 3 PC 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. PACS: 13.75.Cs, 12.39.Fe, 12.39.Jh For more than 15 years, the intermediate-range at- result in calculating the deuteron properties and the traction of nucleon–nucleon (NN) interaction has been