Puzzles in $B\to h_c(χ_{c2})K$ Decays and QCD Factorization

Details Puzzles in $B\to h_c(χ_{c2})K$ Decays and QCD Factorization Puzzles in $B\to h_c(χ_{c2})K$ Decays and QCD Factorization

2006-07-20

arxiv.org/abs/hep-ph/0607221v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure, presentation of the summary is improved

Scientific paper

We study the factorization-forbidden decays $B\to h_c K$ and $B\to\chi_{c2}K$ in the QCD factorization approach. If neglecting the vertex corrections and regularizing the end-point singularities in spectator corrections properly, we get small branching ratios for both the two decay modes, which are roughly consistent with the experimental upper limits. This is in contrast to another factorization-forbidden decay $B\to \chi_{c0}K$, for which a large decay rate is obtained in the same approach.

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