Chinese Physics C > 1982, Vol. 6 > Issue(6): 711-720

INFLUENCE OF THE △-ISOBAR EXCITATION ON (γ,p) REACTION AT MEDIUM ENERGIES

WANG YING-CAI

Institute of High Energy Physics, Academia Sinica

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Abstract：

The major purpose of the present paper is to study medium energy (γ, p) reactionmechanisms. Differential cross section calculations are performed in a picture whichincludes both direct reaction process and an excitation of △-isobar-hole states. It isshown that simple PWIA calculation can not give a good fit to the data, but the △-hresult is in reasonable agreement with experiment. This means that the role of △ in-termediate excitation in the. (γ, p) reaction is significant. Some discussions about ob-tained results are also given in the paper.

References

[1]

D. J. George, Phys. Rev., 167(1968), 1357.[2] H. Hebach et al., Nucl. Phys., A267(1976), 425.[3] J. Arende et al., Nucl. Phys., A322(1979), 253.[4] J. T. Londergan and Cf. D. Niaon, Phys. Rev., C19(1979), 998.[5] A. Tekou, Nuo. Cim., 54A(1979), 25.[6] D. O: Riaka, "Mesons in Nuclei" VII, 755.[7] L. Tiator et al., Nucl. Phys., A333(1980), 343.[8] E. Oset and W. Weise, Nucl. Phys., A319(1979), 477.[9] W. Weise, Nucl. Phys., A278(1977), 402.[10] 高琴等,高能物理与核物理,3(1981), 321.

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WANG YING-CAI. INFLUENCE OF THE △-ISOBAR EXCITATION ON (γ,p) REACTION AT MEDIUM ENERGIES[J]. Chinese Physics C, 1982, 6(6): 711-720.

WANG YING-CAI. INFLUENCE OF THE △-ISOBAR EXCITATION ON (γ,p) REACTION AT MEDIUM ENERGIES[J]. Chinese Physics C, 1982, 6(6): 711-720. shu

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Received: 1981-04-20
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

INFLUENCE OF THE △-ISOBAR EXCITATION ON (γ,p) REACTION AT MEDIUM ENERGIES

WANG YING-CAI

Institute of High Energy Physics, Academia Sinica

Received Date:1981-04-20
Accepted Date:1900-01-01
Available Online:1982-12-05

Abstract:

The major purpose of the present paper is to study medium energy (γ, p) reactionmechanisms. Differential cross section calculations are performed in a picture whichincludes both direct reaction process and an excitation of △-isobar-hole states. It isshown that simple PWIA calculation can not give a good fit to the data, but the △-hresult is in reasonable agreement with experiment. This means that the role of △ in-termediate excitation in the. (γ, p) reaction is significant. Some discussions about ob-tained results are also given in the paper.