Impact of low-x resummation on QCD analysis of HERA data

Mostrar otras versiones (1)

Fits to the final combined HERA deep-inelastic scattering cross-section data within the conventional DGLAP framework of QCD have shown some tension at low x and low [Formula: see text] . A resolution of this tension incorporating [Formula: see text] -resummation terms into the HERAPDF fits is invest...

Descripción completa

Detalles Bibliográficos
Autores principales: Abdolmaleki, Hamed, Bertone, Valerio, Britzger, Daniel, Camarda, Stefano, Cooper-Sarkar, Amanda, Giuli, Francesco, Glazov, Alexander, Kusina, Aleksander, Luszczak, Agnieszka, Olness, Fred, Sapronov, Andrey, Shvydkin, Pavel, Wichmann, Katarzyna, Zenaiev, Oleksandr, Bonvini, Marco
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2018
Materias:
Regular Article - Theoretical Physics
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6191127/
https://www.ncbi.nlm.nih.gov/pubmed/30839766
http://dx.doi.org/10.1140/epjc/s10052-018-6090-8
Descripción
Sumario:Fits to the final combined HERA deep-inelastic scattering cross-section data within the conventional DGLAP framework of QCD have shown some tension at low x and low [Formula: see text] . A resolution of this tension incorporating [Formula: see text] -resummation terms into the HERAPDF fits is investigated using the xFitter program. The kinematic region where this resummation is important is delineated. Such high-energy resummation not only gives a better description of the data, particularly of the longitudinal structure function [Formula: see text] , it also results in a gluon PDF which is steeply rising at low x for low scales, [Formula: see text] , contrary to the fixed-order NLO and NNLO gluon PDF.

Ejemplares similares