Speaker
Description
Typically, the bulk properties of Quark Gluon Plasma (QGP) are studied using the low-pt data. However, the high-pt probes can also serve as powerful tomography tools, since they are sensitive to global QGP features, such as different temperature profiles or initial conditions. In this study, we try to determine if it is possible to constrain the η/s of the medium formed in the heavy-ion collisions using the high-pt data/theory. We assume three different parametrizations of (η/s)(T) and compute the high-pt RAA and flow coefficients v2, v3, and v4. Our results demonstrate that the high-pt data can not distinguish between different (η/s)(T) assumptions when the evolution is constrained to reproduce the low-pt data. As a second approach, we utilize our dynamical energy loss model to compute the quenching strength (q̂/T^3) and then transform it into the (η/s)(T) of the evolving medium. The temperature dependence of (η/s) computed in this approach agrees surprisingly well with the (η/s)(T) inferred through state-of-the-art Bayesian analysis of the low-pt data.
