The QCD factorization in $B \to DKK$ decays

Details The QCD factorization in $B \to DKK$ decays The QCD factorization in $B \to DKK$ decays

2003-01-21

arxiv.org/abs/hep-ph/0301174v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 2 figures

Scientific paper

A study of hadron pair production mechanism is motivated by the recent observed decays $\bar B^0\to D^{(*)+}K^-K^0$. One novel phenomenon is threshold enhancement of the kaon pair production. We show that these decays in the heavy quark mass limit can be factorized into a generalized form. The new non-perturbative quantity is the generalized distribution amplitude which describes how a quark-antiquark pair transmits into the hadron pair. A proof of factorization of $\bar B^0\to D^{(*)+}K^-K^0$ decays to all-orders is performed by using the soft-collinear effective theory. The phenomenological application is discussed in brief.

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