Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the Absolute Branching Fractions B to Dpi, D*pi, D**pi
  with a Missing Mass Method   We present branching fraction measurements of charged and neutral B decays to
Dpi-, D*pi- and D**pi- with a missing mass method, based on a sample of 231
million Y(4S)-->BBar pairs collected by the BaBar detector at the PEP-II e+e-
collider. One of the B mesons is fully reconstructed and the other one decays
to a reconstructed charged pion and a companion charmed meson identified by its
recoil mass, inferred by kinematics. Here D** refers to the sum of all the
non-strange charm meson states with masses in the range 2.2-2.8 Gev/c2.

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The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: cond-mat
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The categories of this paper are: quant-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: eess
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The categories of this paper are: stat
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The categories of this paper are: cs
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-th
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The categories of this paper are: atom-ph
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The categories of this paper are: econ
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The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int