6533b823fe1ef96bd127e29e
RESEARCH PRODUCT
Dijets in p + Pb collisions and their quantitative constraints for nuclear PDFs
Kari J. EskolaKari J. EskolaHannu PaukkunenHannu PaukkunenCarlos A. Salgadosubject
Nuclear and High Energy PhysicsParticle physicsNuclear TheoryHadronNuclear TheoryFOS: Physical sciences01 natural sciencesNuclear Theory (nucl-th)Nuclear physicsHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesRapidityNuclear Experiment (nucl-ex)010306 general physicsNuclear ExperimentNuclear theoryNuclear ExperimentPhysicsLarge Hadron Colliderta114010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyPerturbative QCDObservableGluonHigh Energy Physics - PhenomenologyHigh Energy Physics::Experimentdescription
We present a perturbative QCD analysis concerning the production of high-pT dijets in p+Pb collisions at the LHC. The next-to-leading order corrections, scale variations and free-proton PDF uncertainties are found to have only a relatively small influence on the normalized dijet rapidity distributions. Interestingly, however, these novel observables prove to retain substantial sensitivity to the nuclear effects in the PDFs. Especially, they serve as a more robust probe of the nuclear gluon densities at $x>0.01$, than e.g. the inclusive hadron production. We confront our calculations with the recent data by the CMS collaboration. These preliminary data lend striking support to the gluon antishadowing similar to that in the EPS09 nuclear PDFs.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-01-01 | Nuclear Physics A |