QCD at lowQ
2—A correspondence relation for moments of structure functions |
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Authors: | B Schrempp F Schrempp |
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Institution: | 1. Rutherford Laboratory, Chilton, Didcot, Oxon, UK
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Abstract: | The precocious validity of QCD predictions in deep inelastic lepton nucleon scattering ande + e ? annihilation is interpreted as a signal for an underlying “correspondence principle” relating perturbative and nonperturbative physics on theQ 2 average. Correspondence relations for nonsinglet moments of deep inelastic structure functions are formulated, discussed and successfully tested against experiment. The relations provide an independent determination of the QCD ?-parameter from lowQ 2 data in perfect agreement with results from largeQ 2 analyses. |
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