Speaker
Barbara Betz
(Columbia University)
Description
While 2nd Fourier harmonics of jet quenching have been thoroughly explored in the literature and shown to be sensitive to (1) the underlying jet path length dependence of energy loss and (2) the differences between the mean eccentricity predicted by Glauber and CGC/KLN models of initial conditions, the sensitivity of higher harmonics, v_n(p_T, b), to differences between the fluctuation spectrum of geometries has remained relatively unexplored.
We demonstrate that higher azimuthal jet harmonics (n>2) of
R_AA(p_T,phi) and I_AA(p_T,phi) are remarkably insensitive
to the differences of geometrical density fluctuations comparing between Glauber and CGC/KLN models of the initial conditions. Therefore, the differential elliptic v_2(p_T) vs. v_2^(I_AA)(p_T) moment correlation between the 2nd moment of monojet R_AA and dijet I_AA nuclear modifications factors remains the most sensitive probe to differentiate between Glauber and CGC/KLN initial state sQGP geometries.
Primary author
Barbara Betz
(Columbia University)
Co-authors
Giorgio Torrieri
(Frankfurt Institute for Advanced Studies)
Miklos Gyulassy
(Columbia University)
