Deep Inelastic Scattering and Light-Cone Wave Functions

V. M. Belyaev; Mikkel B. Johnson

Deep Inelastic Scattering and Light-Cone Wave Functions

High Energy Physics - Phenomenology 2007-05-23 v1

Authors: V. M. Belyaev , Mikkel B. Johnson

Abstract

In the framework of light-cone QCD sum rules, we study the valence quark distribution function $q(x_B)$ of a pion for moderate $x_B$ . The sum rule with the leading twist-2 wave function gives $q(x_B)=\varphi_\pi(x_B)$ . Twist-4 wave functions give about 30\% for $x_B\sim 0.5$ . It is shown that QCD sum rule predictions, with the asymptotic pion wave function, are in good agreement with experimental data. We found that a two-hump profile for the twist-2 wave function leads to a valence quark disribution function that contradicts experimental data.

Keywords

qcd sum rules deep-inelastic scattering parton distribution functions

Cite

@article{arxiv.hep-ph/9605279,
  title  = {Deep Inelastic Scattering and Light-Cone Wave Functions},
  author = {V. M. Belyaev and Mikkel B. Johnson},
  journal= {arXiv preprint arXiv:hep-ph/9605279},
  year   = {2007}
}

Comments

7 pages, LaTeX, macros - sprocl.sty, epsfig.sty, 1 figure Contribution to the Workshop "Continuous Advances in QCD, '96", March 28-31, 1996, Minneapolis, Minnesota

Deep Inelastic Scattering and Light-Cone Wave Functions

Abstract

Keywords

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