Enviar artigo por via de e-mail Double Photoproduction of Neutral Pions on a Proton and a Deuteron
- Autores: Dusaev R.R.1, Egorov M.V.2
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Afiliações:
- Physical-Technical Institute at National Research Tomsk Polytechnic University
- Russian Federal Nuclear Center – Zababakhin All-Russian Scientific-Research Institute for Technical Physics
- Edição: Volume 60, Nº 1 (2017)
- Páginas: 26-36
- Seção: Article
- URL: https://journals.rcsi.science/1064-8887/article/view/237841
- DOI: https://doi.org/10.1007/s11182-017-1040-8
- ID: 237841
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Resumo
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.
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Sobre autores
R. Dusaev
Physical-Technical Institute at National Research Tomsk Polytechnic University
Autor responsável pela correspondência
Email: crank@qcrypt.org
Rússia, Tomsk
M. Egorov
Russian Federal Nuclear Center – Zababakhin All-Russian Scientific-Research Institute for Technical Physics
Email: crank@qcrypt.org
Rússia, Snezhinsk, Chelyabinsk Oblast’
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