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

• Main Authors: Balewski, Jan T. (Contributor), Betancourt, Michael Joseph (Contributor), Corliss, Ross Cameron (Contributor), Hays-Wehle, James Prewitt (Contributor), Leight, William Axel (Contributor), Milner, Richard G. (Contributor), Redwine, Robert P. (Contributor), Steadman, Stephen G. (Contributor), Surrow, Bernd (Contributor), van Nieuwenhuizen, Gerrit Jan (Contributor), Walker, Matthew H. (Contributor)
• Other Authors: Bates Linear Accelerator Center (Contributor), Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
• Format: Article
• Language: English
• Published: American Physical Society, 2011-08-05T19:48:54Z.
• Subjects: Article
• Online Access: Get fulltext

 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 [delta eta] or relative azimuthal angle Δϕ [delta phi] 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.