Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-05-18
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 1 figure, uses moriond.sty, included. Talk presented at the XXXVIIth Rencontres de Moriond "QCD and high energy hadro
Scientific paper
Geometric scaling is a novel scaling phenomenon observed in deep inelastic scattering at small x: the total virtual photon-proton cross section depends upon the two kinematical variables Q^2 and x only via their combination Q^2 R_0^2(x), with R_0^2(x) \propto x^{\lambda}. At sufficiently low Q^2, below the saturation scale Q_s^2(x) (a few GeV^2), this phenomenon finds a natural explanation as a property of the Color Glass Condensate, the high-density matter made of saturated gluons. To explain the experimental observation of geometric scaling up to much higher values of Q^2, of the order of 100 GeV^2, we study the solution to the BFKL equation subjected to a saturation boundary condition at Q^2\sim Q_s^2(x). We find that the scaling extends indeed above the saturation scale, within a window 1 < \ln(Q^2/Q_s^2) << \ln(Q_s^2/\Lambda^2_{\rm QCD}), which is consistent with phenomenology.
Iancu Edmond
Itakura Kazuhiro
McLerran Larry
No associations
LandOfFree
Understanding Geometric Scaling at Small x 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 Understanding Geometric Scaling at Small x, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Understanding Geometric Scaling at Small x will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-598951