Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sum Rules for Radiative and Strong Decays of Heavy Mesons   We derive two model-independent sum rules relating the transition matrix
elements for radiative and strong decays of excited heavy mesons to properties
of the lowest-lying heavy mesons. The sum rule for the radiative decays is an
analog of the Cabibbo-Radicati sum rule and expresses the sum of the radiative
widths in terms of the isovector charge radius of the ground state heavy meson.
Using model-dependent estimates and heavy hadron chiral perturbation theory
calculations, we show that this sum rule is close to saturation with states of
excitation energies less than 1 GeV. An analog of the Adler-Weisberger sum rule
gives an useful sum rule for the pionic widths of heavy excited mesons, which
is used to set a model-independent upper bound on the coupling of the P-wave
heavy mesons.

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The categories of this paper are: eess
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The categories of this paper are: supr-con
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: q-bio
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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph
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The categories of this paper are: physics
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The categories of this paper are: patt-sol
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The categories of this paper are: mtrl-th
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The categories of this paper are: nlin
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The categories of this paper are: hep-th
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The categories of this paper are: math
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The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int