Search for the Δ++ component in the 12C ground state using the 12C(γ, π+ p) reaction

V. M. Bystritsky, A. I. Fix, I. V. Glavanakov, P. Grabmayr, Yu F. Krechetov, O. K. Saigushkin, E. N. Schuvalov, A. N. Tabachenko

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The differential cross section for the 12C(γ,π+ p) reaction has been measured in the Δ(1232) resonance region at high recoil momenta of the residual nuclear system. The data are analyzed under the assumption that the formation of the π+ p pairs may be interpreted as a γΔ++ → π+ p process which takes place on a Δ++ preexisting in the target nucleus. Estimates of the Δ++ momentum distribution ρΔ ++ (p̄) = 0.17 fm3 for a mean momentum p̄ = 300 ± 49 MeV/c as well as the number of Δ isobars per nucleon NΔ = 0.017 were obtained for 12C.

Original languageEnglish
Pages (from-to)55-72
Number of pages18
JournalNuclear Physics A
Volume705
Issue number1-2
DOIs
Publication statusPublished - 1 Jul 2002

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momentum
ground state
isobars
nuclei
cross sections
estimates

Keywords

  • σ(E,θ)
  • C deduced Δ resonance component
  • E=420,500 MeV bremsstrahlung; measured Ep
  • NUCLEAR REACTIONSC(γ, pπ)
  • pπ-coin

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Search for the Δ++ component in the 12C ground state using the 12C(γ, π+ p) reaction. / Bystritsky, V. M.; Fix, A. I.; Glavanakov, I. V.; Grabmayr, P.; Krechetov, Yu F.; Saigushkin, O. K.; Schuvalov, E. N.; Tabachenko, A. N.

In: Nuclear Physics A, Vol. 705, No. 1-2, 01.07.2002, p. 55-72.

Research output: Contribution to journalArticle

Bystritsky, VM, Fix, AI, Glavanakov, IV, Grabmayr, P, Krechetov, YF, Saigushkin, OK, Schuvalov, EN & Tabachenko, AN 2002, 'Search for the Δ++ component in the 12C ground state using the 12C(γ, π+ p) reaction', Nuclear Physics A, vol. 705, no. 1-2, pp. 55-72. https://doi.org/10.1016/S0375-9474(02)00625-5
Bystritsky VM, Fix AI, Glavanakov IV, Grabmayr P, Krechetov YF, Saigushkin OK et al. Search for the Δ++ component in the 12C ground state using the 12C(γ, π+ p) reaction. Nuclear Physics A. 2002 Jul 1;705(1-2):55-72. https://doi.org/10.1016/S0375-9474(02)00625-5
Bystritsky, V. M. ; Fix, A. I. ; Glavanakov, I. V. ; Grabmayr, P. ; Krechetov, Yu F. ; Saigushkin, O. K. ; Schuvalov, E. N. ; Tabachenko, A. N. / Search for the Δ++ component in the 12C ground state using the 12C(γ, π+ p) reaction. In: Nuclear Physics A. 2002 ; Vol. 705, No. 1-2. pp. 55-72.
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AU - Fix, A. I.

AU - Glavanakov, I. V.

AU - Grabmayr, P.

AU - Krechetov, Yu F.

AU - Saigushkin, O. K.

AU - Schuvalov, E. N.

AU - Tabachenko, A. N.

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AB - The differential cross section for the 12C(γ,π+ p) reaction has been measured in the Δ(1232) resonance region at high recoil momenta of the residual nuclear system. The data are analyzed under the assumption that the formation of the π+ p pairs may be interpreted as a γΔ++ → π+ p process which takes place on a Δ++ preexisting in the target nucleus. Estimates of the Δ++ momentum distribution ρΔ ++ (p̄) = 0.17 fm3 for a mean momentum p̄ = 300 ± 49 MeV/c as well as the number of Δ isobars per nucleon NΔ = 0.017 were obtained for 12C.

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KW - NUCLEAR REACTIONSC(γ, pπ)

KW - pπ-coin

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