Singlet GB contributions in the chiral constituent quark model

Details Singlet GB contributions in the chiral constituent quark model Singlet GB contributions in the chiral constituent quark model

2004-09-06

arxiv.org/abs/hep-ph/0409056v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 LaTeX pages, 3 Tables

Scientific paper

The implications of the latest data pertaining to \bar u-\bar d asymmetry and the spin polarization functions on the contributions of singlet Goldstone boson \eta' within \chiCQM with configuration mixing for explaining the ``proton spin problem'' have been investigated. It is found that the present data favors smaller values of the coupling of singlet Goldstone Boson \eta' as compared to the corresponding contributions from \pi, K and \eta Goldstone bosons. It seems that a small non-zero value of the coupling of \eta' (\zeta \neq 0) is preferred over \zeta=0 phenomenologically.

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