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Experimental studies of di-jet survival and surface emission bias in Au+Au collisions via angular correlations with respect to back-to-back leading hadrons

H. Agakishiev et al. (STAR Collaboration)
Phys. Rev. C 83, 061901(R) – Published 10 June 2011

Abstract

We report first results from an analysis based on a new multi-hadron correlation technique, exploring jet-medium interactions and di-jet surface emission bias at the BNL Relativistic Heavy Ion Collider (RHIC). Pairs of back-to-back high-transverse-momentum hadrons are used for triggers to study associated hadron distributions. In contrast with two- and three-particle correlations with a single trigger with similar kinematic selections, the associated hadron distribution of both trigger sides reveals no modification in either relative pseudorapidity Δη or relative azimuthal angle Δϕ from d+Au to central Au+Au collisions. We determine associated hadron yields and spectra as well as production rates for such correlated back-to-back triggers to gain additional insights on medium properties.

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  • Received 13 February 2011

DOI:https://doi.org/10.1103/PhysRevC.83.061901

©2011 American Physical Society

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Vol. 83, Iss. 6 — June 2011

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