6533b85ffe1ef96bd12c1bb4
RESEARCH PRODUCT
Nuclear PDF constraints from p+Pb collisions at the LHC
Ilkka HeleniusHannu PaukkunenKari J. Eskolasubject
QuarkParticle physicsPhotonNuclear TheoryNuclear TheoryHadronFOS: Physical sciencesGood control02 engineering and technologyInelastic scatteringNuclear Theory (nucl-th)High Energy Physics - Phenomenology (hep-ph)Pion0202 electrical engineering electronic engineering information engineering0501 psychology and cognitive sciencesnuclear PDF constraintsNuclear Experiment050107 human factorsPhysicsLarge Hadron ColliderHigh Energy Physics::Phenomenology05 social sciences020207 software engineeringGluonHigh Energy Physics - PhenomenologyHigh Energy Physics::Experimentdescription
As the current nuclear PDF analyses are mainly constrained by fixed-target Drell-Yan and deeply inelastic scattering data only the quark nuclear modifications at fairly large $x$ values are in a good control. Inclusive pion production in d+Au collisions at RHIC provides some constraints for gluons but due to the limited kinematic reach of the data the gluon modifications remain uncertain especially at small values of $x$. In this talk, we discuss how the existing data from p+Pb collisions at the LHC can improve the nuclear PDF fits and which measurements would be sensitive to the small-$x$ gluons. In particular, we consider inclusive hadron production, compare this to direct photons, and show estimates of the effect of CMS dijet measurements to the uncertainty of nuclear gluon distributions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-09-09 | Proceedings of XXIII International Workshop on Deep-Inelastic Scattering — PoS(DIS2015) |