Solution to the Balitsky-Kovchegov equation with the collinearly improved kernel including impact-parameter dependence

D. Bendova; J. Cepila; J. G. Contreras; M. Matas

Solution to the Balitsky-Kovchegov equation with the collinearly improved kernel including impact-parameter dependence

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arxiv 1907.12123 v1 pith:WLFNPDVT submitted 2019-07-28 hep-ph

Solution to the Balitsky-Kovchegov equation with the collinearly improved kernel including impact-parameter dependence

D. Bendova , J. Cepila , J. G. Contreras , M. Matas This is my paper

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keywords kernelsolutionbalitsky-kovchegovcollinearlyequationfoundimpact-parameterimproved

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The solution to the impact-parameter dependent Balitsky-Kovchegov equation with the collinearly improved kernel is studied in detail. The solution does not present the phenomenon of Coulomb tails at large impact parameters that have affected previous studies. The origin of this behaviour is explored numerically. It is found to be linked to the fact that this kernel suppresses large daughter dipoles. Solutions based on a physics motivated form of the initial condition are used to compute predictions for structure functions of the proton and the exclusive photo- and electroproduction of vector mesons. A reasonable agreement is found when comparing to HERA and LHC data.

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