Cold Nuclear Matter Effects on Dijet Productions in Relativistic Heavy-ion Reactions at LHC

Abstract

We investigate the cold nuclear matter(CNM) effects on dijet productions in high-energy nuclear collisions at LHC with the next-to-leading order perturbative QCD. The nuclear modifications for dijet angular distributions, dijet invariant mass spectra, dijet transverse momentum spectra and dijet momentum imbalance due to CNM effects are calculated by incorporating EPS, EKS, HKN and DS param-etrization sets of parton distributions in nucleus . It is found that dijet angular distributions and dijet momentum imbalance are insensitive to the initial-state CNM effects and thus provide optimal tools to study the final-state hot QGP effects such as jet quenching. On the other hand, the invariant mass spectra and the transverse momentum spectra of dijet are generally enhanced in a wide region of the invariant mass or transverse momentum due to CNM effects with a feature opposite to the expected suppression because of the final-state parton energy loss effect in the QGP. The difference of EPS, EKS, HKN and DS parametrization sets of nuclear parton distribution functions is appreciable for dijet invariant mass spectra and transverse momentum spectra at p+Pb collisions, and becomes more pronounced for those at Pb+Pb reactions.

10 pages, 11 figures

References in corpus (13)

• 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
• Hard Interactions of Quarks and Gluons: a Primer for LHC Physics
• A light-cone wavefunction approach to open heavy flavor dynamics in QCD matter
• Non-Abelian energy loss in cold nuclear matter
• A theory of jet shapes and cross sections: from hadrons to nuclei
• Jets in Hadron-Hadron Collisions
• The physics of $Z^0/{\gamma }^{\ast }$-tagged jets at the LHC
• Jet quenching pattern at LHC in PYQUEN model
• A systematic study of direct photon production in heavy ion collisions
• Inclusive prompt photon production in nuclear collisions at RHIC and LHC
• Fluctuations and asymmetric jet events in PbPb collisions at the LHC
• Rapidity-dependence of jet shape broadening and quenching

Cited by in corpus (12)

• Predictions for $p+$Pb Collisions at sqrt s_NN = 5 TeV
• Momentum imbalance of isolated photon-tagged jet production at RHIC and LHC
• Initial-state cold nuclear matter energy loss effects on inclusive jet production in p+A collisions at RHIC and LHC
• Nuclear PDFs in the beginning of the LHC era
• A perturbative QCD study of dijets in p+Pb collisions at the LHC
• Study of W and Z Boson Production in Proton-Lead Collisions at the LHC with KP Nuclear Parton Distributions
• Light and heavy flavor dijet production and dijet mass modification in heavy ion collisions
• Productions of $Z^0$ and $W^{+}/W^{-}$ in Relativistic Heavy-Ion Collisions at the LHC
• Probing Shadowed Nuclear Sea with Massive Gauge Bosons in the Future Heavy-Ion Collisions
• Imaging nuclear modifications on parton distributions with triple-differential dijet cross sections in proton-nucleus collisions
• Jet probes of QCD matter: single jets and dijets in heavy-ion collisions
• Probing nuclear matter with jets