Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hybrid Charmonium Production in NRQCD   Using the operator product expansion and nonrelativistic QCD we study the
production of charmonium hybrids in B decays. We express the decay rate in
terms of a few matrix elements which eventually will be fixed by experimental
measurements or calculated on the lattice. While the Fock state expansion is
problematic for hybrids, the operator product expansion still provides a model
independent framework for phenomenological calculations of hybrid production
and decay. We then use a simple flux tube model to estimate the branching ratio
B -> psi_g+X, where psi_g is a J^{PC}=0^{+-} hybrid, the large production of
which could help resolve the low charm multiplicity observed in B decays.

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The categories of this paper are: q-alg
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The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-th
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: ao-sci
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The categories of this paper are: nlin
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The categories of this paper are: hep-ex
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The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con