Radiative (phi -> f_0(980) gamma) decay in light cone QCD sum rules

摘要

The light cone QCD sum rules method is used to calculate the transition formfactor for the radiative (phi -> f_0 gamma) decay, assuming that the quarkcontent of the (f_0) meson is pure (bar{s}s) state. The branching ratio isestimated to be Br(phi -> f_0 gamma) = 3.5 x (1 pm 0.3) x 10^(-4). A comparisonof our prediction on branching ratio with the theoretical results andexperimental data existing in literature is presented.