Measurement of jet quenching with I_CP and I_AA,Pythia in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV with ALICE

TL;DR

This study measures jet quenching indicators I_CP and I_AA,Pythia in Pb-Pb collisions at 2.76 TeV, revealing expected away-side suppression and an unexpected near-side enhancement, providing new insights into in-medium energy loss effects.

Contribution

First measurement of I_CP and I_AA,Pythia in Pb-Pb collisions at LHC energies showing novel near-side enhancement.

Findings

Observed away-side suppression consistent with in-medium energy loss.

Detected a previously unreported near-side enhancement.

Results suggest new phenomena in jet quenching at high energies.

Abstract

This paper discusses the measurement of I_CP and I_AA,Pythia with ALICE (A Large Ion Collider Experiment). An away-side suppression is found expected from in-medium energy loss. Further, and unexpected, a near-side enhancement is seen which has not been reported by previous experiments at lower energies.