Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-10-30
Phys.Lett.B590:199-208,2004
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 3 figures, 3 tables
Scientific paper
10.1016/j.physletb.2004.02.040
We show that the HERA data for the inclusive structure function F_2(x,Q^2) for x < 0.01 and 0.045 < Q^2 < 45 GeV^2 can be well described within the color dipole picture, with a simple analytic expression for the dipole-proton scattering amplitude, which is an approximate solution to the non-linear evolution equations in QCD. For dipole sizes less than the inverse saturation momentum 1/Q_s(x), the scattering amplitude is the solution to the BFKL equation in the vicinity of the saturation line. It exhibits geometric scaling and scaling violations by the diffusion term. For dipole sizes larger than 1/Q_s(x), the scattering amplitude saturates to one. The fit involves three parameters: the proton radius R, the value x_0 of x at which the saturation scale Q_s equals 1GeV, and the logarithmic derivative of the saturation momentum \lambda. The value of \lambda extracted from the fit turns out to be consistent with a recent calculation using the next-to-leading order BFKL formalism.
Iancu Edmond
Itakura Kazuhiro
Munier Stéphane
No associations
LandOfFree
Saturation and BFKL dynamics in the HERA data 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 Saturation and BFKL dynamics in the HERA data at small x, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Saturation and BFKL dynamics in the HERA data at small x will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-250701