Light-cone distribution amplitudes of Ξ and their applications

We present the light-cone distribution amplitudes of the Xi baryons up to twist six on the basis of QCD conformal partial wave expansion to the leading order conformal spin accuracy. The nonperturbative parameters relevant to the DAs are determined in the framework of the QCD sum rule. The light-cone QCD sum rule approach is used to investigate both the electromagnetic form factors of Xi and the exclusive semileptonic decay of Xi(c) as applications. Our estimations on the magnetic moments are mu(Xi 0) = -(1.92 +/- 0.34)mu(N) and mu(Xi)- = (1.19 +/- 0.03)mu(N). The decay width of the process Xi(c) -> Xi e(+) nu(e) is evaluated to be Gamma = 8.73 x 10(-14) GeV, which is in accordance with the experimental measurements and other theoretical approaches.