Jet Quenching in Relativistic Heavy Ion Collisions at the LHC

Abstract

Single jet production, through the central-to-peripheral ratio R CP , is found to be suppressed in central collisions by approximately a factor of two, nearly independent of the jet p T . The R CP is found to have a small but significant increase with increasing R, which may relate directly to aspects of radiative energy loss.

Jet (de)coherence in Pb–Pb collisions at the LHC

“…At high p ⊥ this is caused by energy loss due to medium induced radiation [9]. Presently we will assume that these jets are mainly induced by primary quarks and parameterize the vacuum spectrum by a power law, d 2 σ jet p-p /d 2 p ⊥ ∝ p −n ⊥ , with the exponent n 5.6 extracted from experimental data [21]. The nuclear modification factor is defined…”