Diffraction Dissociation, Final State Interaction and Quasi-Elastic Two-Body Processes

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概要

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• The diffraction dissociation model for the production process p+p→p+(π+N)^+ is examined. The partial wave expansion of the production amplitude is done in the rest frame of the dissociated π+N system. The resonant final state interaction is introduced by using the dispersion relation technique, where the resonant states S_<11>(1710), P_<11>(1470), D_<13>(1520), D_<15>(1690) and F_<15>(1690) are taken into account. Our final state interaction contains not only the onshell term but also the offshell term, and the onshell part of the final state interaction coincides with the term given by Rushbrooke phenomenologically. The effect of the resonant final state interaction makes the 1.4 GeV bump sharper but does not produce the second and third peaks observed in experiments, because of the destructive interference between the nonfinal state interacting amplitudes and the final state interacting amplitudes. The second and third peaks are, therefore, considered to be produced by a mechanism different from the diffraction dissociation process. Direct quasi-elastic two-body processes are investigated for these resonance peaks.

• 理論物理学刊行会の論文
• 1970-02-25

著者

• Uehara Masayuki

  Department Of Physics Kyushu University

• Uehara Masayuki

  Department Of Physics Kyoto University

• Kagiyama Shigenori

  Department Of Applied Physics Fukuoka University

• KAGIYAMA Shigenori

  Department of Physics, Kyushu University

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