Applications of Sudakov suppressed Balitsky-Kovchegov equation in heavy quark productions
XIANG Wenchang1,2， CAI Yanbing1， WANG Mengliang1,2， DANG Ruina1
(1.Key Laboratory of Econophysics， Guizhou University of Finance and Economics， Guiyang 550025， China；2.Institute of Particle Physics， Central China Normal University， Wuhan 430079， China)
Abstract：The Sudakov suppressed Balitsky-Kovchegov equation is used to study the charm and bottom quark productions at HERA energies in the framework of color dipole model. The integral-differential Balitsky-Kovchegov equation was numerically solved in order to get the Sudakov suppressed dipole amplitues which are used to describe the heavy quark production reduced cross-section in electron-proton scattering at HERA. To avoid the overfit， the parameters from fitting to the reduced cross-section in our previous work were directly utilized to study the charm and bottom quark productions. The outcomes show that the Sudakov suppressed Balitsky-Kovchegov equation provides a rather good description of the heavy quark production data， which indicates that the Sudakov effect is significant in the heavy quark productions.
2022, Vol. 56 
