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Title: Charmonium production in pp annihilation: Estimating cross sections from decay widths

Abstract

The cross sections for the charmonium production processes pp{yields}m{psi}, where m is a light meson and {psi} is a charmonium state, are of great interest for the planned pp experiment PANDA. In this paper we estimate these cross sections using known results for the decays {psi}{yields}mpp, which are related to these reactions by crossing. In lieu of detailed experimental data on the decay Dalitz plots, we assume a constant amplitude as a first approximation; this implies a simple relation between the cross sections and decay widths. The single measured exclusive cross section of this type is pp{yields}{pi}{sup 0}J/{psi}, which was reported by E760 to be 130{+-}25pb near {radical}(s)=3.5-3.6 GeV. In comparison, our constant amplitude estimate is about 300 pb at this energy. This suggests that our approach is useful as a simple estimate, but should be refined through detailed modeling of resonances and other energy-dependent effects in the {psi}{yields}mpp Dalitz plots.

Authors:
;  [1];  [2]
  1. Uppsala University, Department of Radiation Sciences, SE-75121 Uppsala (Sweden)
  2. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States) and Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
Publication Date:
OSTI Identifier:
20783024
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.73.096003; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; AMPLITUDES; ANNIHILATION; APPROXIMATIONS; COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; CROSS SECTIONS; DALITZ PLOT; ENERGY DEPENDENCE; GEV RANGE; HADRONIC PARTICLE DECAY; J PSI-3097 MESONS; PARTICLE PRODUCTION; PARTICLE WIDTHS; PROTON-PROTON INTERACTIONS; PSI-3770 MESONS

Citation Formats

Lundborg, A., Wiedner, U., and Barnes, T. Charmonium production in pp annihilation: Estimating cross sections from decay widths. United States: N. p., 2006. Web. doi:10.1103/PHYSREVD.73.096003.
Lundborg, A., Wiedner, U., & Barnes, T. Charmonium production in pp annihilation: Estimating cross sections from decay widths. United States. doi:10.1103/PHYSREVD.73.096003.
Lundborg, A., Wiedner, U., and Barnes, T. Mon . "Charmonium production in pp annihilation: Estimating cross sections from decay widths". United States. doi:10.1103/PHYSREVD.73.096003.
@article{osti_20783024,
title = {Charmonium production in pp annihilation: Estimating cross sections from decay widths},
author = {Lundborg, A. and Wiedner, U. and Barnes, T.},
abstractNote = {The cross sections for the charmonium production processes pp{yields}m{psi}, where m is a light meson and {psi} is a charmonium state, are of great interest for the planned pp experiment PANDA. In this paper we estimate these cross sections using known results for the decays {psi}{yields}mpp, which are related to these reactions by crossing. In lieu of detailed experimental data on the decay Dalitz plots, we assume a constant amplitude as a first approximation; this implies a simple relation between the cross sections and decay widths. The single measured exclusive cross section of this type is pp{yields}{pi}{sup 0}J/{psi}, which was reported by E760 to be 130{+-}25pb near {radical}(s)=3.5-3.6 GeV. In comparison, our constant amplitude estimate is about 300 pb at this energy. This suggests that our approach is useful as a simple estimate, but should be refined through detailed modeling of resonances and other energy-dependent effects in the {psi}{yields}mpp Dalitz plots.},
doi = {10.1103/PHYSREVD.73.096003},
journal = {Physical Review. D, Particles Fields},
number = 9,
volume = 73,
place = {United States},
year = {Mon May 01 00:00:00 EDT 2006},
month = {Mon May 01 00:00:00 EDT 2006}
}