The Non-perturbative Effect on $R=σ_L /σ_T$ from QCD Vacuum

Details The Non-perturbative Effect on $R=σ_L /σ_T$ from QCD Vacuum The Non-perturbative Effect on $R=σ_L /σ_T$ from QCD Vacuum

1998-02-18

arxiv.org/abs/hep-ph/9802348v1

Phys.Lett. B423 (1998) 162-168

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, LaTeX, 2 eps figures, To appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(98)00094-X

We investigate the non-perturbative effects on the ratio $R=\sigma_L /\sigma_T$ in lepton-nucleon deep inelastic scattering by taking into account the lowest dimensional condensate contributions from the QCD vacuum. By combining conventional perturbative QCD corrections and the Georgi- Politzer target-mass effects with the non-perturbative effects from the QCD vacuum, we give a good description of the $Q^2$ and $x$ dependences of $R$ in comparison with the recent experimental data.

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