Effect of gluon-exchange pair-currents on the ratio G(E(P))/G(M(P))

Details Effect of gluon-exchange pair-currents on the ratio G(E(P))/G(M(P)) Effect of gluon-exchange pair-currents on the ratio G(E(P))/G(M(P))

2003-02-15

arxiv.org/abs/nucl-th/0302037v1

Phys.Rev. C67 (2003) 042201

Physics

Nuclear Physics

Nuclear Theory

5 pages, 4 figures

Scientific paper

10.1103/PhysRevC.67.042201

The effect of one-gluon-exchange (OGE) pair-currents on the ratio $\mu_p G_E^p/G_M^p$ for the proton is investigated within a nonrelativistic constituent quark model (CQM) starting from $SU(6) \times O(3)$ nucleon wave functions, but with relativistic corrections. We found that the OGE pair-currents are important to reproduce well the ratio $\mu_p G_E^p/G_M^p$. With the assumption that the OGE pair-currents are the driving mechanism for the violation of the scaling law we give a prediction for the ratio $\mu_n G_E^n/G_M^n$ of the neutron.

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