COHERENT π0 PHOTOPRODUCTION IN THE QUASI-Δ33 DOORWAY STATE MODEL

  • The quasi-Δ33 doorway state model, previously developed to describe pion-nucleus scattering [1], is applied to the study of coherent π0 photoproduction on nuclei. The unifying feature of this approach for pion elastic scattering and photoproduction are briefly discussed. We compare our sesults with W. Weise's isobar-hole model calculations and plane wave impulse approximation calculations. The results are presented for 16O(γ, π0)16O and 12C(γ, π0)12C, and compared to the available experimental data. It has a large suppression for the cross section compared with the impule approximation prediction.
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  • [1] 高琴等, 高能物理与核物理, 5(1981), 176,[2] W. Weise, Nucl. Phys., A358(1981), 163C.[3] E. Oset and W. Weise, Nucl. Phys., A368(1981), 375.[4] B Meeking, Proc. Int. Conf. on Nuclear Physics with Electromagnetic Interactions, Mainz 1979, Lecture Notes in Physics 108(1979): 382. H Rost, thesis, Univ. of Bonn (1980).[5] J. H. Koch, Phys. Rev., C20(1979), 235[6] G. E.Brown and W. Weise, Phys. Report, 22C(1975), 279.[7] 马维兴, 余自强, 徐承先, “在△33准门口态模型中π-12C的弹性散射”, 高能物理与核物理, 2(1983),186.
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YU Zi-Qiang, XU Cheng-Xian, MA Wei-Xing and WANG Ying-Cai. COHERENT π0 PHOTOPRODUCTION IN THE QUASI-Δ33 DOORWAY STATE MODEL[J]. Chinese Physics C, 1983, 7(4): 466-472.
YU Zi-Qiang, XU Cheng-Xian, MA Wei-Xing and WANG Ying-Cai. COHERENT π0 PHOTOPRODUCTION IN THE QUASI-Δ33 DOORWAY STATE MODEL[J]. Chinese Physics C, 1983, 7(4): 466-472. shu
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Received: 1900-01-01
Revised: 1900-01-01
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COHERENT π0 PHOTOPRODUCTION IN THE QUASI-Δ33 DOORWAY STATE MODEL

    Corresponding author: YU Zi-Qiang,

Abstract: The quasi-Δ33 doorway state model, previously developed to describe pion-nucleus scattering [1], is applied to the study of coherent π0 photoproduction on nuclei. The unifying feature of this approach for pion elastic scattering and photoproduction are briefly discussed. We compare our sesults with W. Weise's isobar-hole model calculations and plane wave impulse approximation calculations. The results are presented for 16O(γ, π0)16O and 12C(γ, π0)12C, and compared to the available experimental data. It has a large suppression for the cross section compared with the impule approximation prediction.

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