On the Origin of the Trigger-Angle Dependence of the Ridge Structure
Yogiro Hama (1), Rone P.G. Andrade (1), Frederique Grassi (1) and, Wei-Liang Qian (2) ((1) Instituto de Fisica, Universidade de Sao Paulo, Sao, Paulo, Brazil, (2) Departamento de Fisica, Universidade Federal de Ouro, Preto, Ouro Preto-MG, Brazil)
TL;DR
This paper investigates the cause of the trigger-angle dependence of the ridge structure in two-hadron correlations at RHIC, attributing it to the interplay between initial geometry-driven elliptic flow and fluctuation-induced flow.
Contribution
It offers a new explanation for the trigger-angle dependence by analyzing the combined effects of initial geometry and fluctuations on flow.
Findings
The ridge structure's trigger-angle dependence arises from flow interplay.
Elliptic flow from initial geometry influences the ridge.
Flow fluctuations contribute significantly to the observed pattern.
Abstract
The origin of the trigger-angle dependence of the ridge structure in two-hadron long-range correlations, as observed at RHIC, is discussed as due to an interplay between the elliptic flow caused by the initial state global geometry and flow produced by fluctuations.
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