Direct observation of dijets in central Au+Au collisions with STAR
Dan Magestro
Abstract
We present first results of azimuthal (Delta phi) correlations of high transverse momentum (pT) hadrons from the high-statistics Au+Au dataset collected at RHIC in 2004. Previous correlations measurements observed the disappearance of back-to-back (Delta phi ~ pi) correlations in central Au+Au collisions, supporting the emerging picture of parton energy loss in dense QCD matter. In the present analysis, increasing the pT thresholds reveals a narrow back-to-back dijet peak which emerges above the decreasing combinatoric background. We study the possible medium modification of the dijet fragmentation function and compare to models, to place constraints on the nature and magnitude of in-medium energy loss.
Create a lesson
Related papers
Probing high-momentum components in 16O via zero-degree (p,d) cross-section ratios
FRS Experiment Collaboration, X. Wang, H. J. Ong et al.
Double-differential neutron-induced cross sections on Fe-nat at GANIL-NFS
L. de Arruda, D. Tarrío, X. Ledoux et al.
Event-by-event net-charge fluctuations in pp, OO, Ne-Ne, and Pb-Pb collisions with ALICE at the LHC
Nida Malik
Charge exchange reactions with central and tensor interactions and nuclear matrix elements associated with double-beta-decay neutrinos and astro neutrinos
Hiroyasu Ejiri, Yoritaka Iwata
First Measurement of Compton Scattering on 3He at HIγS
J. Zhou, E. Mancil, M. W. Ahmed et al.
Evolution of high-spin states in neutron-rich 195-202Au isotopes approaching the N=126 shell closure
Y. Cho, Y. H. Kim, A. Navin et al.