Dijets in p+Pb collisions and their quantitative constraints for nuclear PDFs
arXiv:1408.4563 · doi:10.1016/j.nuclphysa.2014.07.012
Abstract
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 , 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.
arXiv commentTranscription of the talk given in Quark Matter 2014 conference
References in corpus (13)
- New parton distributions for collider physics
- EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
- Determination of nuclear parton distribution functions and their uncertainties at next-to-leading order
- Global Analysis of Nuclear Parton Distributions
- Centrality Dependence of pi^0 and eta Production at Large Transverse Momentum in sqrt(s_NN) = 200 GeV d+Au Collisions
- PDF reweighting in the Hessian matrix approach
- Agreement of Neutrino Deep Inelastic Scattering Data with Global Fits of Parton Distributions
- Fragmentations Functions in Nuclear Media
- Inclusive pi^0, eta, and direct photon production at high transverse momentum in p+p and d+Au collisions at sqrt(s_NN) = 200 GeV
- MEKS: a program for computation of inclusive jet cross sections at hadron colliders
- Nuclear PDFs in the beginning of the LHC era
- A perturbative QCD study of dijets in p+Pb collisions at the LHC
- CTEQ nuclear parton distribution functions
Cited by in corpus (8)
- EPPS16: Nuclear parton distributions with LHC data
- Heavy-ion collisions at the Large Hadron Collider: a review of the results from Run 1
- Nuclear Structure Functions at a Future Electron-Ion Collider
- Top-quark production in proton-nucleus and nucleus-nucleus collisions at LHC energies and beyond
- An analysis of the impact of LHC Run I proton-lead data on nuclear parton densities
- Constraining gluon distributions in nuclei using dijets in proton-proton and proton-lead collisions at 5.02 TeV
- Neutron skin and centrality classification in high-energy heavy-ion collisions at the LHC
- An overview of experimental results from ultra-relativistic heavy-ion collisions at the CERN LHC: hard probes