Show simple item record

The NN interaction in a quark model with quark-antiquark excitations

dc.contributor.authorFujiwara, Y.en_US
dc.contributor.authorHecht, Karl T.en_US
dc.date.accessioned2006-04-07T18:54:25Z
dc.date.available2006-04-07T18:54:25Z
dc.date.issued1985-11-11en_US
dc.identifier.citationFujiwara, Y., Hecht, K. T. (1985/11/11)."The NN interaction in a quark model with quark-antiquark excitations." Nuclear Physics A 444(4): 541-578. <http://hdl.handle.net/2027.42/25502>en_US
dc.identifier.urihttp://www.sciencedirect.com/science/article/B6TVB-47312DX-XP/2/55eeba54c976894aa2c4e291df3eeef1en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/25502
dc.description.abstractQuark-antiquark excitations inherent in the quark-gluon interaction have been incorporated into a quark model of the nucleon to study the effects of such excitations on the NN interaction within the framework of the resonating group method. The three-quark (3q) components of a single nucleon are augmented by () excitations with the 24 possible spin, isospin, color combinations for the energetically lowest p-wave relative motion function. Quark exchange kernels are then calculated for the two-nucleon system described by these improved nucleon internal functions; and these exchange kernels are converted to phase-shift-equivalent effective NN potentials by the Wigner-transform WKB technique. The off-shell qq pair-creation terms are derived from the one-gluon exchange diagrams in the Breit approximation in analogy with the derivation of the qq and qq potentials. The parameters of the interaction are chosen to be consistent with the experimental [Delta]-N mass difference, the nucleon-vector-meson coupling constants, and the nucleon magnetic moments. Within these constraints, the predicted amplitudes of the () components of the nucleon internal functions have been shown to be insensitive to the precise values of the model parameters. In particular, they pass the crucial test of being insensitive to very large changes in the magnitude of the confinement potential constant which is a necessary ingredient of the model. The qq excitations lead to the following effects in the S-wave NN potentials: (i) The repulsive core heights of the simple 3q-3q model are greatly reduced but retain their strong essentially linear energy dependence, with numerical values very similar to those of the short-range phenomenological terms of the Paris potential. (ii) The effective potentials have acquired an attractive part in the 0.8-1.5 fm range. However, this attraction is too weak to bind the deuteron or fit the extreme low-energy S-wave phase shifts.en_US
dc.format.extent2497804 bytes
dc.format.extent3118 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.language.isoen_US
dc.publisherElsevieren_US
dc.titleThe NN interaction in a quark model with quark-antiquark excitationsen_US
dc.typeArticleen_US
dc.rights.robotsIndexNoFollowen_US
dc.subject.hlbsecondlevelPhysicsen_US
dc.subject.hlbsecondlevelNuclear Engineering and Radiological Sciencesen_US
dc.subject.hlbtoplevelScienceen_US
dc.subject.hlbtoplevelEngineeringen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumPhysics Department, University of Michigan, Ann Arbor, Michigan 48109, USAen_US
dc.contributor.affiliationumPhysics Department, University of Michigan, Ann Arbor, Michigan 48109, USAen_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/25502/1/0000043.pdfen_US
dc.identifier.doihttp://dx.doi.org/10.1016/0375-9474(85)90104-6en_US
dc.identifier.sourceNuclear Physics Aen_US
dc.owningcollnameInterdisciplinary and Peer-Reviewed


Files in this item

Show simple item record

Remediation of Harmful Language

The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.

Accessibility

If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.