Valence quark distributions in nucleon at low $Q^2$ in QCD

Details Valence quark distributions in nucleon at low $Q^2$ in QCD Valence quark distributions in nucleon at low $Q^2$ in QCD

2002-08-21

arxiv.org/abs/hep-ph/0208192v2

Nucl.Phys. A714 (2003) 145-160

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, LaTeX 2e, 9 eps figures included, revised version (no changes in text, only 1 LATEX command is changed)

Scientific paper

10.1016/S0375-9474(02)01322-2

Valence u- and d-quarks distributions in proton are calculated in QCD at low $Q^2$ and intermediate x, basing on the operator product expansion (OPE). The imaginary part of the virtual photon scattering amplitude on quark current with proton quantum numbers is considered. The initial and final virtualities $p^2_1$ and $p^2_2$ of the currents are assumed to be large, negative and different, $p^2_1 \not= p^2_2$. The OPE in $p^2_1$, $p^2_2$ up to dimension 6 operators was performed. Double dispersion representations in $p^2_1, p^2_2$ of the amplitudes in terms of physical states contributions are used. Putting them to be equal to those calculated in QCD, the sum rules for quark distributions are found. The double Borel transformations are applied to the sum rules. Leading order perturbative corrections are accounted. Valence quark distributions are found: $u(x)_v$ at $0.15

Affiliated with

Also associated with

No associations

Rating

Valence quark distributions in nucleon at low $Q^2$ in QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Valence quark distributions in nucleon at low $Q^2$ in QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valence quark distributions in nucleon at low $Q^2$ in QCD will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-220799