Azimuthal anisotropy in a jet absorption model with fluctuating initial geometry in heavy ion collisions

The azimuthal anisotropy due to path-length-dependent jet energy loss is studied in a simple jet absorption model that includes event-by-event fluctuating Glauber geometry. Significant anisotropy coefficients v_n are observed for n=1, 2, and 3, but they are very small for n>3. These coefficients are expected to result in a ridge for correlations between two independently produced jets. The correlations between the orientation of the nth-order anisotropy induced by jet absorption (ΦnQP) and the nth-order participant plane (ΦnPP) responsible for harmonic flow are studied. Tight correlations are observed for n=2 in mid-central collisions, but they weaken significantly for n≠2. The correlations are positive for n≤3, but become negative in central collisions for n>3. The dispersion between ΦnQP and ΦnPP is expected to break the factorization of the Fourier coefficients from two-particle correlation v_n,n into the single particle v _n, and has important implications for the high-p_T ridge phenomena.