科研之友
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摘要
We argue from both the quark language and the free field light-cone expansion in light-cone perturbation theory that the constraint of overall "energy" conservation in deep inelastic lepton-nucleon scattering yields a similar new scaling variable x(p), which reduces to the Weizmann variable, the Bloom-Gilman variable and the Bjorken variable at some approximations. The x(p) rescaling is expected to be a good scaling variable, and hence gives strong power-law type corrections to the deviations of Bjorken scaling. An understanding of this x(p) rescaling from both the free field operator product expansion (OPE) and the ordinary OPE is also given, indicating it is likely a higher order effect in the coefficient functions, i.e. it does not belong to the higher twist effect. Therefore this x(p) rescaling is likely a new effect contributing to the power-law type corrections.
- 出版日期1991-1-30
- 单位中国科学院高能物理研究所
