Testing pQCD and AdS/CFT Energy Loss at RHIC and LHC

Abstract

We compare calculations of jet quenching observables at sqrt s = 2.76 ATeV to preliminary LHC data from weak-coupling pQCD and strong-coupling AdS/CFT drag energy loss models. Rigorously constrained to sqrt s = 200 AGeV RHIC pi^0 suppression data and introducing no free parameters, the pQCD-based WHDG model simultaneously describes qualitatively the suppression of light hadrons and quantitatively the azimuthal anisotropy (over many centrality classes) of light hadrons and the suppression of D mesons at LHC. The drag predictions shown here--qualitatively constrained to RHIC data--compare poorly to the measured suppression of D mesons, but the current experimental uncertainties are large. The double ratio of D to B meson R_AA(p_T) should provide a robust experimental measurement to distinguish between the very different assumptions of the strength of interactions in the QGP produced in heavy ion collisions; i.e., whether, from a jet quenching standpoint, the medium is either weakly- or strongly-coupled.

3 pages, 2 figures. Proceedings for the 19th Particles and Nuclei International Conference (PANIC11), July 24th--29th, 2011, Massachusetts Institute of Technology, Cambridge, MA, USA

Cited by in corpus (29)

• Heavy-flavour and quarkonium production in the LHC era: from proton-proton to heavy-ion collisions
• QCD and strongly coupled gauge theories: challenges and perspectives
• Suppression of high transverse momentum D mesons in central Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Open Heavy Flavor in QCD Matter and in Nuclear Collisions
• Transverse momentum dependence of D-meson production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Azimuthal anisotropy of D meson production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Measurement of prompt D-meson production in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Calculating the Jet Quenching Parameter $\hat{q}$ in Lattice Gauge Theory
• Constraints on the Path-Length Dependence of Jet Quenching in Nuclear Collisions at RHIC and LHC
• Heavy Quark Production and Energy Loss
• Fluctuating Heavy Quark Energy Loss in Strongly-Coupled Quark-Gluon Plasma
• Centrality dependence of high-$p_{\mathrm{T}}$ D meson suppression in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Measurement of the production of high-$p_{\mathrm{T}}$ electrons from heavy-flavour hadron decays in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Heavy-flavor production in heavy-ion collisions and implications for the properties of hot QCD matter
• The JETSCAPE framework
• Production of muons from heavy-flavour hadron decays in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV
• Strong-coupling Jet Energy Loss from AdS/CFT
• Heavy-Flavour Jets in High-Energy Nuclear Collisions
• Forward $D$ predictions for $p\mathrm{Pb}$ collisions, and sensitivity to cold nuclear matter effects
• NLO Monte Carlo predictions for heavy-quark production at the LHC: pp collisions in ALICE
• Nonconformal holographic model for D-meson suppression at energies available at the CERN Large Hadron Collider
• Measurement of prompt $D^{+}$ and $D_s^{+}$ production in $p\mathrm{Pb}$ collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$TeV
• Open Charm Production in $p+p$ and Pb + Pb collisions at the CERN Large Hadron Collider
• INFN What Next: Ultra-relativistic Heavy-Ion Collisions
• Prompt production of D mesons with ALICE at the LHC
• Quarkonium Results in PbPb Collisions at CMS
• Open-charm meson elliptic flow measurement in Pb-Pb collisions at sqrt(sNN) = 2.76 TeV with ALICE at the LHC
• Weakness or Strength in the Golden Years of RHIC and LHC?
• D mesons suppression in PbPb collisions at sqrt{s_{NN}} = 2.76 TeV measured by ALICE