QCD traveling waves phenomenology revisited

• Autor(a) principal: Amaral, João Thiago de Santana
• Data de Publicação: 2021
• Outros Autores: Fagundes, Daniel Almeida, Machado, Magno Valério Trindade
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRGS
• Texto Completo: http://hdl.handle.net/10183/219572
• topic: Cromodinâmica quântica; Quarks pesados; Interações elétron-próton

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, σ r ( x , y , Q 2 ) , as well as DIS structure functions such as F 2 ( x , Q 2 ) and F L ( x , Q 2 ) , all measured at HERA. Additionally, it provides good descriptions of heavy quark structure functions, F c c 2 and F b b 2 at small- x and Q 2 ≲ 60     GeV 2 . We also use the improved model to make predictions for structure functions to be measured in the near future at LHeC.