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Prog. Theor. Phys. Vol. 63 No. 5 (1980) pp. 1723-1737

[ Full Text PDF : FREE ACCESS (1153K) ]

Electroproduction of a Meson and Correlating Quark Rearrangement Model

Kazuyoshi Izawa

Department of Physics, Nagoya University, Nagoya 464

(Received December 17, 1979)

Abstract:

Electroproduction of a meson is investigated on the basis of correlating quark rearrangement model which describes phenomena from the soft to the hard regions in a unified way. On the assumption that a virtual photon interacts with an on-shell quark, the following results are obtained: i) The power-law scaling dσ/dt∝s-2nf(θ) is derived in the hard region, where n is the total number of quark lines with large momentum transfer in the respective diagrams. A virtual photon must not be counted as “two” like a meson, but as “unity” in the power counting. ii) The angular distribution and Q2 dependence on the differential cross section are predicted and they are in good agreement with experiments. iii) The valence quark contribution is dominant in the large Q2 region. The correspondence between the parton model and correlating quark rearrangement model is discussed.


URL : http://ptp.ipap.jp/link?PTP/63/1723/
DOI : 10.1143/PTP.63.1723

[ Full Text PDF : FREE ACCESS (1153K) ] Citation:

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