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arXiv · hep-ph/9510325

Inclusive $B_c$ Decays As A QCD Lab

I. I. Bigi
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Abstract

Phenomenological models of heavy flavour decays differ significantly in their predictions of global features of $B_c$ decays, like the $B_c$ lifetime or the relative weight of $c\ra s$ and $b\ra c$ transitions. The $1/m_Q$ expansion which is directly based on QCD allows predictions on the pattern to be expected, namely $τ(B_c)$ to lie well below 1 psec with $c\ra s$ dominating over $b\ra c$ and a reduced semileptonic branching ratio. Due to interference effects one also predicts a lower charm content in the final states of $B_c$ decays than naively anticipated. The numerical aspect of the predictions, however, has to be viewed with considerable caution since one cannot expect the $1/m_c$ expansion to converge readily for $ΔC=1$ transitions.

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I. I. Bigi. 1995-10-17. Inclusive $B_c$ Decays As A QCD Lab. https://doi.org/10.1016/0370-2693(95)01574-4

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