Electric Polarizabilities of Neutral Baryons in the QCD Sum Rule

Details Electric Polarizabilities of Neutral Baryons in the QCD Sum Rule Electric Polarizabilities of Neutral Baryons in the QCD Sum Rule

1997-10-22

arxiv.org/abs/hep-ph/9710435v1

Phys.Lett. B422 (1998) 26-32

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 1 figure

Scientific paper

10.1016/S0370-2693(97)01567-0

We investigate the electric polarizabilities of neutral baryons using the method of QCD sum rules. The diagrams in the operator product expansion are taken into account up to dimension 6. We obtain different values of the polarizabilities among hyperons, the ordering of which is given $\bar\alpha_n>\bar\alpha_{\Xi^0}>\bar\alpha_{\Lambda}$. The polarizability of ${\Sigma^0}$, $\bar\alpha_{\Sigma^0}$, has possibly a very small value.

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