Electroproduction of a Meson and Correlating Quark Rearrangement Model

概要

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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 obtainrd: i) The power-law scaling dσ/dt∝s^<-2n>f(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 Q^2 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 Q^2 region. The correspondence between the parton model and correlating quark rearrangement model is discussed.
一般社団法人日本物理学会の論文
1980-05-25