Angular dihadron correlations as an interplay between elliptic and triangular flows

作者：Eyyubova G^*; Korotkikh V L; Lokhtin I P; Petrushanko S V; Snigirev A M; Bravina L; Zabrodin E E

来源：Physical Review C, 2015, 91(6): 064907.

DOI：10.1103/PhysRevC.91.064907

The hybrid model HYDJET++, which considers soft and hard processes, is employed for the analysis of dihadron angular correlations measured in Pb+Pb collisions at center-of-mass energy root(NN)-N-s = 2.76 TeV. The model allows the study of both individual and mutual influence of lower flow harmonics, upsilon(2) and upsilon(3), on higher harmonics and dihadron angular correlations. It is shown that the typical structure called a ridge in dihadron angular correlations in a broad pseudorapidity range could appear just as the interplay of upsilon(2) and upsilon(3). Central, semi-central, and semi-peripheral collisions were investigated. Comparison of model results with the experimental data on dihadron angular correlations is presented for different centralities and transverse momenta p(T).

• 出版日期2015-6-9