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

TL;DR

This study introduces a new multi-hadron correlation method to investigate jet-medium interactions and surface emission bias in Au+Au collisions at RHIC, revealing no modification in associated hadron distributions compared to d+Au collisions.

Contribution

It presents a novel multi-hadron correlation technique that provides new insights into jet quenching and surface emission bias in heavy-ion collisions.

Findings

Associated hadron distributions show no modification from d+Au to central Au+Au collisions.

The method offers detailed measurements of associated hadron yields and spectra.

Results suggest surface emission bias in jet production within the medium.

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 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 pseudo-rapidity or relative azimuthal angle 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.