Coupling Glauber Monte Carlo Phenomenology with High pT Measurements to Estimate Jet Anisotropy v2 and Correlations of Partonic Energy Loss with Energy Density εBj

ORAL

Abstract

Broad experimental evidence supporting the creation of Quark Gluon Plasma (QGP) in Relativistic Heavy Ion Collisions has prompted an array of models aiming to understand the fluid properties of this medium. Glauber Monte Carlo (MCG) models have proven widely successful in providing estimates of initial-state collision geometry and enabled reliable calculation of observables measuring partonic energy loss such as the Nuclear Modification Factor RAA—a key signature of the QGP.

This work further couples phenomenological estimates of high pT partonic energy loss from the RAA with geometric quantities furnished by MCG models, enabling estimation of other observables such as the jet azimuthal anisotropy v2, Bjorken energy density εBj and its dependence on partonic energy loss. Extracted parameters can then be compared directly with a variety of data reported at both RHIC and the LHC. Predictions for jet anisotropy spectra v2(pT) are found to agree with observation, and a relationship between partonic energy loss and energy density εBj is observed—this relationship is consistent among estimates surveyed from a range of experiments, collision systems and collision energy.

Publication: Planned publication: "Understanding the Dependence of Partonic Energy Loss on the Initial Energy Density of the Quark Gluon Plasma" (not yet preprint, hopefully will be before DNP)

Presenters

  • Ryan Hamilton

    Yale University

Authors

  • Ryan Hamilton

    Yale University