6533b7dafe1ef96bd126e2e6
RESEARCH PRODUCT
Modeling the Impact Parameter Dependence of the nPDFs With EKS98 and EPS09 Global Fits
Carlos A. SalgadoCarlos A. SalgadoIlkka HeleniusIlkka HeleniusHeli HonkanenKari J. EskolaKari J. Eskolasubject
Quantum chromodynamicsPhysicsNuclear and High Energy PhysicsWork (thermodynamics)Large Hadron ColliderNuclear Theoryta114010308 nuclear & particles physicsFOS: Physical sciencesModification factor01 natural sciencesNuclear Theory (nucl-th)Nuclear physicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)PionDGLAP0103 physical sciencesSpatial dependenceImpact parameter010306 general physicsParticle Physics - Phenomenologydescription
So far the nuclear PDFs (nPDFs) in the global DGLAP fits have been taken to be spatially independent. In this work, using the $A$-dependence of the globally fitted sets EPS09 and EKS98, we have determined the spatial dependence of the nPDFs in terms of powers of the nuclear thickness functions. New spatially dependent nPDF sets EPS09s (NLO, LO, error sets) and EKS98s (LO) are released. As an application, we consider the nuclear modification factor $R_{dAu}^{\pi^0}$ at midrapidity for neutral pion production in deuteron-gold collisions at RHIC in NLO. Comparison with the PHENIX data in different centrality classes is also shown. In addition, predictions for the corresponding nuclear modification factor $R_{pPb}^{\pi^0}$ in proton-lead collisions at the LHC are discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-08-01 | Nuclear Physics A |