Centrality dependence of high energy jets in p+Pb collisions at the LHC

Abstract

The recently measured centrality dependence of high energy jets in proton-lead collisions at the LHC is investigated. We hypothesize that events with jets of very high energy (a few hundred GeV) are characterized by a suppressed number of soft particles, thus shifting these events into more peripheral bins. This naturally results in the suppression (enhancement) of the nuclear modification factor, $R_{pA}$, in central (peripheral) collisions. Our calculations suggest that a moderate suppression of the order of $20\%$, for $10^3$ GeV jets, can quantitatively reproduce the experimental data. We further extract the suppression factor as a function of jet energy and test our conjecture using available $R_{pA}$ data for various centralities.

5 pages, 4 figures; extended discussion, comparison with data added

References in corpus (5)

• Glauber Modeling in High Energy Nuclear Collisions
• Centrality and rapidity dependence of inclusive jet production in $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV proton-lead collisions with the ATLAS detector
• Centrality-dependent modification of jet-production rates in deuteron-gold collisions at $\sqrt{s_{NN}}$=200 GeV
• Initial-state cold nuclear matter energy loss effects on inclusive jet production in p+A collisions at RHIC and LHC
• Revealing nucleon and nucleus flickering in pA collisions at the LHC

Cited by in corpus (19)

• Review of Jet Measurements in Heavy Ion Collisions
• Centrality and rapidity dependence of inclusive jet production in $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV proton-lead collisions with the ATLAS detector
• 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
• Heavy-ion collisions at the Large Hadron Collider: a review of the results from Run 1
• Centrality-dependent modification of jet-production rates in deuteron-gold collisions at $\sqrt{s_{NN}}$=200 GeV
• Neutron skin and centrality classification in high-energy heavy-ion collisions at the LHC
• Jets in d(p)-A Collisions: Color Transparency or Energy Conservation
• 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
• 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
• 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
• Search for jet quenching effects in high-multiplicity pp collisions at $\sqrt{s}$ = 13 TeV via di-jet acoplanarity
• Kinematic biases on centrality selection of jet events in pPb collisions at the LHC
• 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
• Effect of meson cloud on the jet nuclear modification factor in $pA$ collisions
• Collisional and radiative energy loss in small systems
• Hard processes in small systems
• Event activity measurements and mid-rapidity correlations in 200 GeV p+Au collisions at STAR