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NN scattering phase shifts in a chiral constituent quark model

✍ Scribed by D. Bartz; Fl. Stancu

Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 139 KB
Volume: 688
Category: Article
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(00)00599-6

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✦ Synopsis

We study the nucleon-nucleon interaction within a chiral constituent quark model which reproduces successfully the baryon spectra. We calculate the 3 S 1 and 1 S 0 phase shifts by using the resonating group method. They clearly indicate the presence of a strong repulsive interaction at short distance, due to the spin-flavour symmetry of the quark-quark interaction and of the quark interchange between the two interacting nucleons. A σ -meson exchange quark-quark interaction, providing a medium-range attraction, helps to get closer to the experimental phase shifts.

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