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Quark bags and the NN interaction

Journal Article · · Phys. Rev. D; (United States)
The NN phase shifts can be nicely parametrized with a P matrix with matching radius broughly-equal6.0 GeV/sup -1/roughly-equal1.2 fm. For the interaction outside this radius a one-pion-exchange potential is used. For the (I,J/sup P/) = (0,1/sup +/) six-quark system a detailed analysis of the P-matrix pole is made. The pole position and the bag-model prediction are in reasonably good agreement. The residue to the NN channel, however, is a factor of 5 larger than the bag prediction. A possible explanation is that in a six-quark bag there are strong color-singlet correlations. This is demonstrated in a simple model.
Research Organization:
Center for Theoretical Physics, Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
DOE Contract Number:
AC02-76ER03069
OSTI ID:
5735622
Journal Information:
Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 28:3; ISSN PRVDA
Country of Publication:
United States
Language:
English