Analysis of $γ^\ast Λ\to Σ^0$ transition in QCD

Abstract

The $γ^\ast Λ\to Σ^0$ transition form factors are investigated within the light--cone QCD sum rules method. Using the most general form of the interpolating current of $Σ^0$ baryon and the distribution amplitudes of $Λ$ baryon we calculate the $Q^2$ dependence of the electromagnetic form factors. Our result are compared with the predictions of the covariant spectator quark model.

13 Pages and 4 Figures