26-30 March 2012
University of Bonn
Europe/Berlin timezone

Global Analysis of Nuclear Parton Distributions

27 Mar 2012, 14:25
20m
Wolfgang Paul Lecture Hall (University of Bonn)

Wolfgang Paul Lecture Hall

University of Bonn

Kreuzbergweg 28, 53115 Bonn, Germany,
Structure functions Structure functions

Speaker

Rodolfo Sassot (Universidad de Buenos Aires)

Description

We present a new global QCD analysis of nuclear parton distribution functions and their uncertainties. In addition to the most commonly analyzed data sets for deep inelastic scattering of charged leptons off nuclei and Drell-Yan di-lepton production, we include also measurements for neutrino nuclei scattering as well as inclusive pion production in deuteron gold collisions. The analysis is performed at next-to-leading order accuracy in perturbative QCD in a general mass variable flavor number scheme, adopting a current set of free nucleon parton distribution functions, defined accordingly, as reference. The emerging picture is one of consistency, where universal nuclear modification factors for each parton flavor reproduce the main features of all data without any significant tension among the different sets. We use the Hessian method to estimate the uncertainties of the obtained nuclear modification factors and examine critically their range of validity in view of the sparse kinematic coverage of the present data. We briefly present several applications of our nuclear parton densities in hard nuclear reactions at BNL-RHIC, CERN-LHC, and a future electron ion collider.

Primary author

Rodolfo Sassot (Universidad de Buenos Aires)

Co-authors

Daniel de Florian (Universidad de Buenos Aires) Marco Stratmann (Univ. Regensburg/Univ. Wuerzburg) Maria Zurita (Buenos Aires University)

Presentation materials