Work

Nuclear effects on the longitudinal structure function at small x

Year: 2010

Type: article

Abstract: We discuss the longitudinal structure function in nuclear DIS at small x. We work within the framework of universal parton densities obtained in DGLAP analyses at NLO. We show that the nuclear effects on the longitudinal structure function closely follow those on the gluon distribution. The error analyses available from newest sets of nuclear PDFs also allow to propagate the uncertainties from present data. In this way, we evaluate the minimal sensitivity required in future experiments for this observable to improve the knowledge of the nuclear glue. We further discuss the uncertainties on the extraction of F2 off nuclear targets, introduced by the usual assumption that the ratio FL/F2 is independent of the nuclear size. We focus on the kinematical regions relevant for future lepton–ion colliders.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2010.09.027

Authors: Néstor Armesto, Hannu Paukkunen, Carlos A. Salgado, Konrad Tywoniuk

Institutions: Universidade de Santiago de Compostela, European Organization for Nuclear Research

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid:

Funders: European Commission, Ministerio de Ciencia e Innovación, Xunta de Galicia