Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Semi-leptonic and Non-leptonic $B$ meson decays to charmed mesons   We study the semi-leptonic and non-leptonic $B$ weak decays which are
governed by the $B\rightarrow D^{(*)}$ transitions. The branching ratios, CP
asymmetries (CPA) and polarization fractions (FA) of non-leptonic decays are
investigated in the factorization approximation. The $B\rightarrow D^{(*)}$
form factors are estimated in the Salpeter method. Our estimation on branching
ratios generally agree with the existent experimental data. For CPA and
polarizations, comparisons among the FA results, the perturbative QCD
predictions and experimental data are made.

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The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
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The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
2
The categories of this paper are: math
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The categories of this paper are: stat
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: cond-mat
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The categories of this paper are: supr-con
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The categories of this paper are: plasm-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex