Forward elastic scattering : dynamical gluon mass and semihard interactions

• Autor(a) principal: Rocha, Mateus Broilo da
• Data de Publicação: 2019
• Outros Autores: Fagundes, Daniel Almeida, Luna, Emerson Gustavo de Souza, Menon, Marcio Jose
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRGS
• Texto Completo: http://hdl.handle.net/10183/205852
• topic: Aceleradores de partículas; Cromodinâmica quântica; Altas energias

The role of low-x parton dynamics in dictating the high-energy behavior of forward scattering observables at LHC energies is investigated using a QCD-based model with even-under-crossing amplitude dominance at high-energies. We explorethe effects of different sets of pre-and post-LHC fine-tuned parton distributions on the forward quantities σtot and ρ, from pp and ¯pp scattering in the interval 10 GeV–13 TeV. We also investigate the role of the leading soft contribution, the low-energy cuttoff, and the energy dependence of the semihard form factor on these observables. We show that in all cases investigated the highly restrictive data on ρ parameter at √s = 13 TeV indicate that a crossing-odd component may play a crucial role in forward elastic scattering at the highest energies, namely the Odderon contribution.