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Photoproduction of π+ p-pairs on the 16O nucleus and isobar configurations

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Abstract

The yield of the 16O(γ, π+ p) reaction has been measured in the region of the excitation of the Δ(1232) isobar at high momentum transfers to the residual nuclear system. The experimental data are interpreted within the model taking into account manifestations of isobar configurations in the ground state of the 16O nucleus. Direct and exchange mechanisms of the production of pions with emission of one and two nucleons, which follow from the structures of the density matrices for these reactions, have been considered. The probability of the production of the Δ-isobar in the ground state of the 16O nucleus has been empirically estimated as P Δ = 0.019 ± 0.003 ± 0.003.

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Authors and Affiliations

  1. Institute of Physics and Technology, National Research Tomsk Polytechnic University, Tomsk, 634050, Russia

    I. V. Glavanakov, Yu. F. Krechetov & A. N. Tabachenko

  2. Institute of Physics, University of Tübingen, D-72076, Tübingen, Germany

    P. Grabmayer

Authors
  1. I. V. Glavanakov
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  2. P. Grabmayer
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  3. Yu. F. Krechetov
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  4. A. N. Tabachenko
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Corresponding author

Correspondence to Yu. F. Krechetov.

Additional information

Original Russian Text © I.V. Glavanakov, P. Grabmayer, Yu.F. Krechetov, A.N. Tabachenko, 2013, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2013, Vol. 97, No. 4, pp. 197–202.

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Glavanakov, I.V., Grabmayer, P., Krechetov, Y.F. et al. Photoproduction of π+ p-pairs on the 16O nucleus and isobar configurations. Jetp Lett. 97, 173–177 (2013). https://doi.org/10.1134/S002136401304005X

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  • DOI: https://doi.org/10.1134/S002136401304005X

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