Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electromagnetic rho-meson form factors in point-form relativistic
  quantum mechanics   The relativistic point-form formalism that we proposed for the study of the
electroweak structure of few-body bound states is applied to calculate the
elastic form factors of spin-1 mesons, such as the rho meson, within
constituent-quark models. We treat electron-meson scattering as a
Poincare-invariant coupled-channel problem for a Bakamjian-Thomas mass operator
and extract the meson current from the resulting invariant 1-photon-exchange
amplitude. Wrong cluster properties inherent in the Bakamjian-Thomas framework
are seen to cause spurious contributions in the current. These contributions,
however, can be separated unambiguously from the physical ones and we end up
with a meson current with all required properties. Numerical results for the
rho-meson form factors are presented assuming a simple harmonic-oscillator
bound-state wave function. The comparison with other approaches reveals a
remarkable agreement of our results with those obtained within the covariant
light-front scheme proposed by Carbonell et al. [Phys. Rep. 300, 215 (1998)].

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The categories of this paper are: dg-ga
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The categories of this paper are: plasm-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: q-alg
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The categories of this paper are: comp-gas
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The categories of this paper are: q-bio
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The categories of this paper are: adap-org
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The categories of this paper are: physics
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The categories of this paper are: chem-ph
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The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
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The categories of this paper are: eess