Event-plane-dependent dihadron correlations with harmonic νn subtraction in Au + Au collisions at √sNN = 200 GeV (CROSBI ID 210381)
Prilog u časopisu | kratko priopćenje | međunarodna recenzija
Podaci o odgovornosti
Agakishiev, G. ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Zoulkarneeva, Y.
engleski
Event-plane-dependent dihadron correlations with harmonic νn subtraction in Au + Au collisions at √sNN = 200 GeV
STAR measurements of dihadron azimuthal correlations (Δϕ) are reported in midcentral (20–60%) Au + Au collisions at sNN‾‾‾√=200 GeV as a function of the trigger particle's azimuthal angle relative to the event plane, ϕs=∣∣ϕt−ψEP∣∣. The elliptic (v2), triangular (v3), and quadratic (v4) flow harmonic backgrounds are subtracted using the zero yield at minimum (ZYAM) method. The results are compared to minimum-bias d + Au collisions. It is found that a finite near-side (∣∣Δϕ∣∣<π/2) long-range pseudorapidity correlation (ridge) is present in the in-plane direction (ϕs∼0). The away-side (∣∣Δϕ∣∣>π/2) correlation shows a modification from d + Au data, varying with ϕs. The modification may be a consequence of path-length-dependent jet quenching and may lead to a better understanding of high- density QCD.
dihadron; correlation; STAR
STAR Collaboration.
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Podaci o izdanju
89
2014.
41901-1-41901-8
objavljeno
0556-2813
10.1103/PhysRevC.89.041901