Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Regge Amplitudes and Final State Phases in the Decays B to D Pi   The scattering amplitude of D Pi at the energy of the B mass can be
calculated using Regge theory. Recent papers have used this to calculate the
final state strong phases in the decays B to D Pi. It is argued that while the
Regge amplitude can yield an absorption correction to the decay rate, it is not
useful for determining the strong phase.

31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
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The categories of this paper are: patt-sol
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The categories of this paper are: stat
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
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The categories of this paper are: mtrl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
3
The categories of this paper are: physics
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The categories of this paper are: chao-dyn