Parton Sum Rules and Improved Scaling Variable

Details Parton Sum Rules and Improved Scaling Variable Parton Sum Rules and Improved Scaling Variable

1996-06-20

arxiv.org/abs/hep-ph/9606389v1

Phys.Lett. B378 (1996) 307-312; Erratum-ibid. B380 (1996) 495

Physics

High Energy Physics

High Energy Physics - Phenomenology

latex, with 1 postscript figure, to be published in Phys.Lett.B

Scientific paper

10.1016/0370-2693(96)00392-9

The effect from quark masses and transversal motion on the Gottfried, Bjorken, and Ellis-Jaffe sum rules is examined by using a quark-parton model of nucleon structure functions based on an improved scaling variable. Its use results in corrections to the Gottfried, Bjorken, and Ellis-Jaffe sum rules. We use the Brodsky-Huang-Lepage prescription of light-cone wavefunctions to estimate the size of the corrections. We constrain our choice of parameters by the roughly known higher twist corrections to the Bjorken sum rule and find that the resulting corrections to the Gottfried and Ellis-Jaffe sum rules are relevant, though not large enough to explain the observed sum rule violations.

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