Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Heavy Quark Expansion in 1/\hat{m}_Q and |V_{cb}| Extraction   The dressed heavy quark mass \hat{m}_Q=m_Q+\bar{{\Lambda}} with
\bar{{\Lambda}} being the binding energy is introduced to characterize the
heavy hadrons containing a single heavy quark. A heavy quark expansion in terms
of the inverse of the dressed heavy quark mass 1/\hat{m}_Q is presented with a
complete decomposition of the full field and integrating out the small
components. The heavy quark-antiquark coupling effects are included in the
finite mass corrections. It is shown that the 1/\hat{m}_Q expansion is more
favorable in application. The extraction of |V_{cb}| from exclusive B decays is
studied by using such a new expansion approach.

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The categories of this paper are: gr-qc
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The categories of this paper are: nlin
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The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
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The categories of this paper are: alg-geom
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The categories of this paper are: q-alg
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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-ex
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The categories of this paper are: nucl-ex
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The categories of this paper are: supr-con
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The categories of this paper are: physics
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The categories of this paper are: math-ph
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The categories of this paper are: q-fin
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The categories of this paper are: plasm-ph