Bulk medium evolution has considerable effects on jet observables

Abstract

We consider the case, in QCD, of a single jet propagating within a strongly interacting fluid, of finite extent. Interactions lead to the appearance of a source of energy-momentum within the fluid. The remnant jet that escapes the container is analyzed along with portions of the medium excited by the jet. We study the effect of a static versus a semi-realistic expanding medium, with jets traveling inward versus outward. We consider the medium response via recoils in partonic scatterings based on a weakly-coupled description and its combination with hydrodynamical medium response based on a strongly-coupled description, followed by incorporation into a jet. The effects of these limits on the reconstructed energy, momentum and mass of the jet, as a function of the angle away from the original parton direction are studied. It is demonstrated that different flow velocity configurations in the medium produce considerable differences in jet observables. This work highlights the importance of accurate dynamical modeling of the soft medium as a foundation on which to calculate jet modification, and casts skepticism on results obtained without such modeling.

Main text: 7 pages, 2 figures. Supplemental material: 2 pages, 3 figures

References in corpus (14)

• The theory and phenomenology of perturbative QCD based jet quenching
• Multi-system Bayesian constraints on the transport coefficients of QCD matter
• Measurements of the Nuclear Modification Factor for Jets in Pb+Pb Collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV with the ATLAS Detector
• Phenomenological constraints on the transport properties of QCD matter with data-driven model averaging
• Systematic Comparison of Jet Energy-Loss Schemes in a realistic hydrodynamic medium
• Measurement of inclusive jet charged-particle fragmentation functions in Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV with the ATLAS detector
• Determining the jet transport coefficient $\hat{q}$ from inclusive hadron suppression measurements using Bayesian parameter estimation
• Finite-size effects on the radiative energy loss of a fast parton in hot and dense strongly interacting matter
• Multistage Monte-Carlo simulation of jet modification in a static medium
• The JETSCAPE framework: p+p results
• Elastic energy loss and longitudinal straggling of a hard jet
• Jet modification in three dimensional fluid dynamics at next-to-leading twist
• Resolving the plasma profile via differential single inclusive suppression
• In-medium modification of dijets in PbPb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 5.02 TeV

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