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

作者：Jia Jiangyong^*

来源：Physical Review C, 2013, 87(6): 061901.

DOI：10.1103/PhysRevC.87.061901

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 nu(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 (Phi(QP)(n)) and the nth-order participant plane (Phi(PP)(n)) responsible for harmonic flow are studied. Tight correlations are observed for n = 2 in mid-central collisions, but they weaken significantly for n not equal 2. The correlations are positive for n <= 3, but become negative in central collisions for n > 3. The dispersion between Phi(QP)(n) and Phi(PP)(n) is expected to break the factorization of the Fourier coefficients from two-particle correlation nu(n, n) into the single particle nu(n), and has important implications for the high-p(T) ridge phenomena.

• 出版日期2013-6-10