Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-01-18
Physics
High Energy Physics
High Energy Physics - Phenomenology
22 pages, 12 figures
Scientific paper
We discuss the interplay of low-x physics and QCD scaling violations by extending the unified approach describing inclusive structure functions and diffractive production in $\gamma* p$ interactions proposed in previous papers, to large values of Q2. We describe the procedure of extracting, from the non-perturbative model, initial conditions for the QCD evolution that respect unitarity. Assuming Regge factorization of the diffractive structure function, a similar procedure is proposed for the calculation of hard diffraction. The results are in good agreement with experimental data on the proton structure function $F_2$ and the most recent data on the reduced diffractive cross section, $x_P \sigma_r^{\D(3)}$. Predictions for both $F_2$ and $F_L$ are presented in a wide kinematical range and compared to calculations within high-energy QCD.
Armesto Nestor
Kaidalov Alexei B.
Salgado Carlos A.
Tywoniuk Konrad
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