Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Implications from analyticity constraints used in a Landshoff-Donnachie
  fit   Landshoff and Donnachie[hep-ph/0509240, (2005)] parametrize the energy
behavior of pp and p\bar p scattering cross sections with five parameters,
using: \sigma^+=56.08 s^{-0.4525}+21.70s^{0.0808} for pp, \sigma^-=98.39
s^{-0.4525}+21.70s^{0.0808} for p\bar p. Using the 4 analyticity constraints of
Block and Halzen[M. M. Block and F. Halzen, Phys. Rev. D {\bf 72}, 036006
(2005)], we simultaneously fit the Landshoff-Donnachie form to the same
``sieved'' set of pp and p\bar p cross section and \rho data that Block and
Halzen used for a very good fit to a ln^2 s parametrization. We show that the
satisfaction of the analyticity constraints will require complicated
modifications of the Landshoff-Donnachie parametrization for lower energies,
greatly altering its inherent appeal of simplicity and universality.

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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: gr-qc
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The categories of this paper are: astro-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: physics
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The categories of this paper are: bayes-an
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The categories of this paper are: econ
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The categories of this paper are: eess
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The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: cs
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The categories of this paper are: chem-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-th