Geometrical Effect on Conical Emission of Correlated Hadrons

TL;DR

This paper investigates how the geometry of heavy-ion collisions influences conical emission patterns of correlated hadrons, providing insights into the medium's properties through dihadron correlation analysis.

Contribution

It introduces a study of geometrical effects on conical emission in dihadron correlations, enhancing understanding of medium dynamics in heavy-ion collisions.

Findings

Broader away-side correlations in Au+Au compared to pp and d+Au.

Evidence of conical emission consistent with Mach-cone shock waves.

Correlation patterns depend on the trigger particle azimuth relative to the reaction plane.

Abstract

Dihadron correlations at intermediate p_T revealed novel structures on the away side of high p_T trigger particles at RHIC. The away-side correlations in central Au+Au collisions are significantly broader than in pp and d+Au collisions and in restricted kinematic range, double-peaked away from \Delta\phi=\pi. Three-particle correlations indicate conical emission of the away-side correlated hadrons at angles independent of associated particle p_T, consistent with formation of Mach-cone shock waves. In this talk we further investigate the conical emission phenomenon exploiting dihadron correlations as a function of the trigger particle azimuth from the reaction plane. Such correlations are sensitive to the collision geometry. We study these geometrical effects and discuss how they might be used to further our understanding of the medium created in heavy-ion collisions.