6533b86dfe1ef96bd12c9dbe

RESEARCH PRODUCT

Constraining nPDFs with inclusive pions and direct photons at forward rapidities in p+Pb collisions at the LHC

Hannu PaukkunenHannu PaukkunenKari J. EskolaKari J. EskolaIlkka HeleniusIlkka Helenius

subject

PhysicsNuclear and High Energy PhysicsParticle physicsPhotonLarge Hadron Collider010308 nuclear & particles physicsNuclear TheoryObservable01 natural sciencesNuclear physicsMomentumPionMinimum bias0103 physical sciencesNuclear Experiment010306 general physics

description

Abstract In this talk, we present NLO pQCD predictions for inclusive pion and direct photon nuclear modifications in p + Pb collisions at mid- and forward rapidities at the LHC. In addition to the minimum bias predictions, we also address the centrality dependence with spatially dependent nuclear PDFs. To understand which regions of the nuclear momentum fraction x 2 these observables predominantly probe, we present also the underlying x 2 distributions at different rapidities. We are led to conclude that the isolated photons at forward rapidities are more sensitive to the small- x 2 dynamics than the inclusive pions.

https://doi.org/10.1016/j.nuclphysa.2014.07.013