The strangeness form factors of the proton

Details The strangeness form factors of the proton The strangeness form factors of the proton

2005-12-29

arxiv.org/abs/nucl-th/0512102v1

Phys.Lett. B636 (2006) 265-269

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1016/j.physletb.2006.03.065

The present empirical information on the strangeness form factors indicates that the corresponding $uuds\bar s$ component in the proton is such that the $uuds$ subsystem has the flavor spin symmetry $[4]_{FS}[22]_F[22]_S$ and mixed orbital symmetry $[31]_X$. This $uuds\bar s$ configuration leads to the empirical signs of all the form factors $G_E^s$, $G_M^s$ and $G_A^s$. An analysis with simple quark model wave functions for the preferred configuration shows that the qualitative features of the empirical strangeness form factors may be described with a $\sim$ 15% admixture of $uuds\bar s$ with a compact wave function in the proton. Transition matrix elements between the $uud$ and the $uuds\bar s$ components give significant contributions.

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