Analysis of the radiative decays ${\Sigma }_Q\to {\Lambda }_Q\gamma$ and ${\Xi }_Q^{\prime }\to {\Xi }_Q\gamma$ in light cone sum rules

Abstract

The light cone sum rules method is used in studying the radiative decays ${\Sigma }_Q\to {\Lambda }_Q\gamma$ and ${\Xi }_Q^{\prime }\to {\Xi }_Q\gamma$. Firstly, the sum rules for the form factor $F_2(Q^2=0)$ responsible for these transitions is constructed. Using this result the decay widths of the above--mentioned decays are calculated and analyzed. A comparison of our predictions on the decay widths of considered transitions with the predictions of the other approaches is presented.

13 pages, no figures, LaTeX formatted

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