Tensor properties of the nucleon

Abstract

We report in the present talk recent results of the tensor properties of the nucleon within the framework of the chiral quark-soliton model. The tensor and anomalous tensor magnetic form factors are calculated for the momentum transfer up to $Q^2\le 1{\mathrm{GeV}}^2$ and at a renormalization scale of $0.36{\mathrm{GeV}}^2$. The main results are summarized as follows: the flavor tensor charges of the nucleon are yielded as $\delta u=1.08$, $\delta d=-0.31$, $\delta s=-0.01$, while the up and down anomalous tensor magnetic moments are evaluated as ${\kappa }_T^u=3.56$ and ${\kappa }_T^d=1.83$, respectively. The strange anomalous tensor magnetic moment turns out to be ${\kappa }_T^s=0.2\sim -0.2$, compatible with zero. We discuss their physical implications, comparing them in particular with those from the lattice QCD.

Comments: 4 pages. 4 figures. A talk given at International Conference on the structure of baryons, BARYONS 2010, Dec. 7-11, 2010, Osaka, Japan