Phenomenological Consequences of Arnold and Barnett's Shielding-Cut Mechanism in Proton-Proton Diffraction Scattering
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概要
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Phenomenological consequences of Arnold and Barnett's shielding-cut (ABSC) mechanism are investigated. Under the assumption of an effective normal-Regge trajectory of exchangedegeneracy breaking, the presently available data on p-p diffraction scattering at high energies are analysed by the use of the fixed simple-pole Pomeron (FSPP) with and without ABSC mechanism. First, the presently existing data on the total cross section can be successfully explained by FSPP without ABSC mechanism and also by FSPP with two ABSC α_c(t)=1-m_π^2+t/4 and α^^~_c(t)=1-m_K^2+t/4, but do not seem to be satisgactorily fitted by FSPP with an ABSC α^^-_c(t) alone. Secondly, the data on the real to imaginary ratio of the forward amplitude can be reasonably (but not very successfully) fitted by FSPP without ABSC and also by FSPP with two ABSC α^^-_c(t) and α^^~_c(t), but do not seem to be consistently explained by FSPP with an ABSC α^^-_c(t) alone. Thirdly, FSPP with two ABSC α^^-_c(t) and α^^~_c(t) can give a fully successful explanation of all the existing data on the slope parameter of the elastic peak without the aid of normal-Reggeon contribution. This best fit is obtained by the use of the only one adjustable parameter. But, either FSPP without ABSC or FSPP with an ABSC α^^-_c(t) does not seem to give a consistent fitting to the presently available data on the slope. On the basis of these observations, it is argued that the presently available data on p-p diffraction scattering seem to prefer FSPP with two ABSC α^^-_c(t) and α^^~_c(t) rather than FSPP without ABSC and FSPP with an ABSC α^^-_c(t) alone.
- 理論物理学刊行会の論文
- 1972-10-25
著者
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Fujisaki Haruo
Department Of Physics Rikkyo University
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Akiba Ei-ichi
Department Of Physics Rikkyo University
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