Quark spin coupling in baryons - revisited

Details Quark spin coupling in baryons - revisited Quark spin coupling in baryons - revisited

2002-10-08

arxiv.org/abs/hep-ph/0210126v2

Phys.Rev. D68 (2003) 054007

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, RevTex; a sign error is corrected, spin-orbit results are included

Scientific paper

10.1103/PhysRevD.68.054007

A direct connection can be made between mixing angles in negative parity baryons and the spin coupling of constituent quarks. The mixing angles do not depend on spectral data. These angles are recalculated for gluon exchange and pion exchange between quarks. For pion exchange the results of Glozman and Riska are corrected. The experimental data on mixing are very similar to those derived from gluon exchange but substantially different from the values obtained for pion exchange.

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