Centrality and rapidity dependence of inclusive jet production in $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV proton-lead collisions with the ATLAS detector

Abstract

Measurements of the centrality and rapidity dependence of inclusive jet production in $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV proton--lead ($p$+Pb) collisions and the jet cross-section in $\sqrt{s}=2.76$ TeV proton--proton collisions are presented. These quantities are measured in datasets corresponding to an integrated luminosity of 27.8 nb${}^{-1}$ and 4.0 pb${}^{-1}$, respectively, recorded with the ATLAS detector at the Large Hadron Collider in 2013. The $p$+Pb collision centrality was characterised using the total transverse energy measured in the pseudorapidity interval $-4.9<\eta <-3.2$ in the direction of the lead beam. Results are presented for the double-differential per-collision yields as a function of jet rapidity and transverse momentum ($p_{\mathrm{T}}$) for minimum-bias and centrality-selected $p$+Pb collisions, and are compared to the jet rate from the geometric expectation. The total jet yield in minimum-bias events is slightly enhanced above the expectation in a $p_{\mathrm{T}}$-dependent manner but is consistent with the expectation within uncertainties. The ratios of jet spectra from different centrality selections show a strong modification of jet production at all $p_{\mathrm{T}}$ at forward rapidities and for large $p_{\mathrm{T}}$ at mid-rapidity, which manifests as a suppression of the jet yield in central events and an enhancement in peripheral events. These effects imply that the factorisation between hard and soft processes is violated at an unexpected level in proton-nucleus collisions. Furthermore, the modifications at forward rapidities are found to be a function of the total jet energy only, implying that the violations may have a simple dependence on the hard parton-parton kinematics.

14 pages plus author list + cover pages (30 pages total), 7 figures, 1 table, submitted to Phys. Lett B, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2013-08/

References in corpus (15)

• PYTHIA 6.4 Physics and Manual
• Parton distributions for the LHC
• New parton distributions for collider physics
• Glauber Modeling in High Energy Nuclear Collisions
• The Color Glass Condensate
• EPS09 - a New Generation of NLO and LO Nuclear Parton Distribution Functions
• Jet energy measurement and its systematic uncertainty in proton-proton collisions at $\sqrt{s}=7$ TeV with the ATLAS detector
• Production of $\Sigma (1385{)}^{\pm }$ and $\Xi (1530{)}^0$ in proton-proton collisions at $\sqrt{s}=$ 7 TeV
• Centrality Dependence of pi^0 and eta Production at Large Transverse Momentum in sqrt(s_NN) = 200 GeV d+Au Collisions
• Forward Neutral Pion Production in p+p and d+Au Collisions at sqrt(s_NN)=200 GeV
• The PHOBOS Glauber Monte Carlo
• Measurement of the production and lepton charge asymmetry of $\text{W}$ bosons in Pb+Pb collisions at $\sqrt{s_{\mathbf{NN}}}=$ 2.76 TeV with the ATLAS detector
• Evidence for x-dependent proton color fluctuations in pA collisions at the LHC
• Revealing nucleon and nucleus flickering in pA collisions at the LHC
• Centrality dependence of high energy jets in p+Pb collisions at the LHC

Cited by in corpus (85)

• Review of Jet Measurements in Heavy Ion Collisions
• The ALICE experiment: a journey through QCD
• Measurement of the nuclear modification factor for inclusive jets in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector
• Measurement of inclusive jet cross sections in pp and PbPb collisions at sqrt(s[NN]) = 2.76 TeV
• Experimental overview on small collision systems at the LHC
• Towards the understanding of jet shapes and cross sections in heavy ion collisions using soft-collinear effective theory
• Jet Quenching from QCD Evolution
• Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton--lead collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=5.02$ TeV with the ATLAS detector
• First measurement of jet mass in Pb-Pb and p-Pb collisions at the LHC
• The smallest fluid on earth
• Constraints on jet quenching in p-Pb collisions at $\sqrt{{\mathbf{s}}_{\mathbf{NN}}}$ = 5.02 TeV measured by the event-activity dependence of semi-inclusive hadron-jet distributions
• Measurement of charged jet production cross sections and nuclear modification in p-Pb collisions at $\sqrt{s_\rm{NN}} = 5.02$ TeV
• Heavy-ion collisions at the Large Hadron Collider: a review of the results from Run 1
• Measurement of photon-jet transverse momentum correlations in 5.02 TeV Pb+Pb and $pp$ collisions with ATLAS
• $Z$ boson production in $p+$Pb collisions at $\sqrt{s_{NN}}=5.02$ TeV measured with the ATLAS detector
• Centrality-dependent modification of jet-production rates in deuteron-gold collisions at $\sqrt{s_{NN}}$=200 GeV
• The Present and Future of QCD
• Study of jet quenching with isolated-photon+jet correlations in PbPb and pp collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}=$ 5.02 TeV
• Evidence for x-dependent proton color fluctuations in pA collisions at the LHC
• Centrality dependence of charged jet production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Discovering partonic rescattering in light nucleus collisions
• Collectivity from interference
• Measurement of inclusive jet production and nuclear modifications in pPb collisions at sqrt(s[NN]) = 5.02 TeV
• 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 $\sqrt{s_{{}_{\mathrm{NN}}}}=$ 5.02 TeV
• Initial-state cold nuclear matter energy loss effects on inclusive jet production in p+A collisions at RHIC and LHC
• Transverse momentum spectra of b jets in pPb collisions at sqrt(s[NN]) = 5.02 TeV
• Transverse momentum and process dependent azimuthal anisotropies in $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV $p$+Pb collisions with the ATLAS detector
• Heavy-flavour production in high-energy d-Au and p-Pb collisions
• Predictions for $p+$Pb Collisions at $\sqrt{s_{NN}}=5$ TeV: Comparison with Data
• Exposing Novel Quark and Gluon Effects in Nuclei
• Dijet azimuthal correlations and conditional yields in $pp$ and $p$+Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV with the ATLAS detector
• Measurements of the charm jet cross section and nuclear modification factor in pPb collisions at sqrt(s[NN]) = 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
• Measurement of jet fragmentation in 5.02 TeV proton-lead and proton-proton collisions with the ATLAS detector
• Global analysis of color fluctuation effects in proton- and deuteron-nucleus collisions at RHIC and the LHC
• Selected topics in diffraction with protons and nuclei: past, present, and future
• Observables for possible QGP signatures in central pp collisions
• Jets in d(p)-A Collisions: Color Transparency or Energy Conservation
• QCD Challenges from pp to A-A Collisions
• Origins of collectivity in small systems
• Measurement of prompt photon production in $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV $p$+Pb collisions with ATLAS
• Centrality dependence of high energy jets in p+Pb collisions at the LHC
• Strong constraints on jet quenching in centrality-dependent $p$+Pb collisions at 5.02 TeV from ATLAS
• Neutron-skin effect in direct-photon and charged hadron-production in Pb+Pb collisions at the LHC
• Consequences of high-$x$ proton size fluctuations in small collision systems at RHIC
• $\gamma$-hadron spectra in p + Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Measurement of the dependence of transverse energy production at large pseudorapidity on the hard-scattering kinematics of proton-proton collisions at $\sqrt{s}=2.76$ TeV with ATLAS
• Short path length corrections to Djordjevic-Gyulassy-Levai-Vitev energy loss
• Measurements of jet quenching using semi-inclusive hadron+jet distributions in pp and central Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Disentangling centrality bias and final-state effects in the production of high-$p_T$ ${\pi }^0$ using direct $\gamma$ in $d$$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Measurement of inclusive very forward jet cross sections in proton-lead collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV
• Contribution to differential ${\pi }^0$ and ${\gamma }_{\mathrm{dir}}$ modification in small systems from color fluctuation effects
• Revealing minijet dynamics via centrality dependence of the double parton interactions in proton-nucleus interactions
• Kinematic biases on centrality selection of jet events in pPb collisions at the LHC
• Initial-state splitting kernels in cold nuclear matter
• Ratios of jet and hadron spectra at LHC energies: measuring high-$p_T$ suppression without a $pp$ reference
• Medium-Induced Transverse Momentum Broadening via Forward Dijet Correlations
• Inconsistencies in, and short pathlength correction to, $R_{AA}(p_T)$ in $\mathrm{A}+\mathrm{A}$ and $\mathrm{p}+\mathrm{A}$ collisions
• Comparison of fragmentation functions for light-quark- and gluon-dominated jets from $pp$ and Pb+Pb collisions in ATLAS
• Nonperturbative transverse momentum broadening in dihadron angular correlations in $\sqrt{s_{NN}}=200$ GeV proton-nucleus collisions
• Multi-particle correlations, cumulants, and moments sensitive to fluctuations in rare-probe azimuthal anisotropy in heavy ion collisions
• Mapping color fluctuations in the photon in ultraperipheral heavy ion collisions at the Large Hadron Collider
• Correlations of event activity with hard and soft processes in $p$ + Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV at STAR
• Measurement of the centrality dependence of the dijet yield in $p$+Pb collisions at $\sqrt{s_{{}_{\text{NN}}}}$ = 8.16 TeV with the ATLAS detector
• Bayesian Constraints on Pre-Equilibrium Jet Quenching and Predictions for Oxygen Collisions
• Signatures of an $\alpha$ + core structure in ${}^{44}$Ti + ${}^{44}$Ti collisions at $\sqrt{s_{NN}}=5.02$ TeV by a multiphase transport model
• INFN What Next: Ultra-relativistic Heavy-Ion Collisions
• Evidence of medium response to hard probes using correlations of Z bosons with hadrons in heavy ion collisions
• Observation of the charged-particle multiplicity dependence of ${\sigma }_{\psi (2S)}/{\sigma }_{\text{J}/\psi }$ in pPb collisions at 8.16 TeV
• Study of jet-medium interactions using jet shape observables in heavy ion collisions at LHC energies with JEWEL
• Evidence for a QCD accelerator in relativistic heavy-ion collisions
• Multiplicity dependence of charged-particle intra-jet properties in pp collisions at $\sqrt{s}$ = 13 TeV
• Effect of meson cloud on the jet nuclear modification factor in $pA$ collisions
• Quenching of heavy and light flavour jets: experimental overview
• Hard processes in small systems
• Radial Scaling in Inclusive Jet Production at Hadron Colliders
• Event activity-dependence of jet production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV measured with semi-inclusive hadron+jet correlations by ALICE
• Correlation Measurements of Charged Particles and Jets at Mid-Rapidity with Event Activity at Backward-Rapidity in $\sqrt{s_{\mathrm{NN}}}=200\mathrm{GeV}$ $p$+Au Collisions at STAR
• Event activity measurements and mid-rapidity correlations in 200 GeV p+Au collisions at STAR
• Overview of new results from ATLAS heavy ion physics program
• Characterization of nuclear breakup as a function of hard-scattering kinematics using dijets measured by ATLAS in $p$+Pb collisions
• Jets and Centrality in p(d)-A Collisions
• Studying the QGP with Jets at the LHC and RHIC