Special UCLA High Energy & Astro-Particle (HEAP) Seminar

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Presentation transcript:

Special UCLA High Energy & Astro-Particle (HEAP) Seminar “Event-by-event hydrodynamics + jet energy loss: A solution to the R AA ⊗ v 2 puzzle” Presented by Dr. Jacquelyn Noronha-Hostler University of Houston High p T > 10 GeV elliptic flow, which is experimentally measured via the correlation between soft and hard hadrons, receives competing contributions from event-by-event fluctuations of the low p T elliptic flow and event plane angle fluctuations in the soft sector. In this paper, a proper account of these event-by-event fluctuations in the soft sector, modeled via viscous hydrodynamics, is combined with a jet energy loss model to reveal that the positive contribution from low p T v 2 fluctuations overwhelms the negative contributions from event plane fluctuations. This leads to an enhancement of high p T > 10 GeV elliptic flow in comparison to previous calculations and provides a natural solution to the decade long high p T R AA ⊗ v 2 puzzle. We also present the first theoretical calculation of high p T v 3 , which is shown to be compatible with current LHC data. Furthermore, we discuss how short wavelength jet-medium physics can be deconvoluted from the physics of soft, bulk event-by-event flow observables using event shape engineering techniques. Location: Knudsen 4-134 Date: Friday, June 24th Time: 11:00am