Higher flow harmonics in heavy ion collisions from STAR

作者：Sorensen Paul^*

来源：Journal of Physics G: Nuclear and Particle Physics , 2011, 38(12): 124029.

DOI：10.1088/0954-3899/38/12/124029

We report STAR measurements relating to higher flow harmonics including the centrality dependence of two-and four-particle cumulants for harmonics 1-6. Two-particle correlation functions versus Delta eta and Delta phi are presented for p(T) and number correlations. We find the power spectra (Fourier transforms of the correlation functions) for central collisions drop quickly for higher harmonics. The Delta eta dependence of upsilon(3){2}(2) and p(T) and the centrality dependence of upsilon(2) and upsilon(3) are studied. Trends are consistent with expectations from models including hot-spots in the initial energy density and an expansion phase. We also present upsilon(3) and upsilon(2){2}(2) - upsilon(2){4}(2) versus root s(NN).

• 出版日期2011-12