J. T. Amaral, D. A. Fagundes, M. V. T. Machado

Physical Review D

20/01/2021

Abstract

In this paper, we review and update the Amaral-Gay Ducati-Betemps-Soyez saturation model, by testing it against the recent H1-ZEUS combined data on deep inelastic scattering, including heavy quarks in the dipole amplitude. We obtain that this model, which is based on traveling wave solutions of the Balitsky-Kovchegov equation and built in the momentum space framework, yields very accurate descriptions of the reduced cross section, σr(x,y,Q2), as well as DIS structure functions such as F2(x,Q2) and FL(x,Q2), all measured at HERA. Additionally, it provides good descriptions of heavy quark structure functions, Fcc2 and Fbb2 at small-x and Q2≲60  GeV2. We also use the improved model to make predictions for structure functions to be measured in the near future at LHeC.

10.1103/PhysRevD.103.016013