Cabibbo-suppressed decays of the Omegac0 - feedback to the Xic+ lifetime
Abstract
We investigate a possible background of the type Omegac0 --> Xic+ pi- to the CLEO Xic+ lifetime measurement. This decay mode may lead to an overestimate of the Xic+ decay length and, therefore, increase the measured Xic+ lifetime. The branching ratio Gamma(Omegac0 --> Xic+ pi-)/Gamma(Omegac0 --> Omega- pi+) is analyzed in the framework of the pole model and the modified current algebra. We find that the Omegac0 --> Xic+ pi- decay mode could not generate a substantial systematic error in the Xic+ lifetime measurement. Also, it cannot significantly reduce the disagreement between theoretical and experimental values of the Xic+ lifetime.
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