Email this article Double Photoproduction of Neutral Pions on a Proton and a Deuteron
- Authors: Dusaev R.R.1, Egorov M.V.2
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Affiliations:
- Physical-Technical Institute at National Research Tomsk Polytechnic University
- Russian Federal Nuclear Center – Zababakhin All-Russian Scientific-Research Institute for Technical Physics
- Issue: Vol 60, No 1 (2017)
- Pages: 26-36
- Section: Article
- URL: https://journal-vniispk.ru/1064-8887/article/view/237841
- DOI: https://doi.org/10.1007/s11182-017-1040-8
- ID: 237841
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Abstract
Total cross sections of electromagnetic π0π0 formation processes on a proton and a deuteron in the photon energy range from threshold to Eγ ≤ 2 GeV are calculated. Construction of the single-particle photoproduction operator is based on a calculation of Born and resonance contributions calculated in the tree approximation. The main parameters of the nucleon resonances were found from the Particle Data Group (PDG) compilation. A satisfactory description of the р(γ, π0π0)р cross section was achieved assuming a leading role for the pion rescattering process π+π– → π0π0, whose contribution amounted to more than 1 μb in the vicinity of the D13(1520) resonance.
About the authors
R. R. Dusaev
Physical-Technical Institute at National Research Tomsk Polytechnic University
Author for correspondence.
Email: crank@qcrypt.org
Russian Federation, Tomsk
M. V. Egorov
Russian Federal Nuclear Center – Zababakhin All-Russian Scientific-Research Institute for Technical Physics
Email: crank@qcrypt.org
Russian Federation, Snezhinsk, Chelyabinsk Oblast’
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