The B_c decay rate in the Standard Model
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hep-ph
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decaymesonmodelratestandardapproachcombinationconsidered
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The Standard Model decay rate of the $B_c$ meson is discussed together with a novel approach based on the usage of experimental data in combination with an operator product expansion. In the new method differences of $B,\,D$ and $B_c$ meson decay rates are considered, for which the free-quark contributions drop out, leading to a reduction of the theory prediction.
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