Novel mechanism of high-$p_T$ production from an opaque quark-gluon plasma

Abstract

We find that in an opaque quark-gluon plasma, significant particle production at high transverse momenta can occur via acceleration of (initially) lower-momentum partons. This new mechanism, which is the opposite of parton energy loss (jet quenching), has important implications for observables, such as elliptic flow, in heavy-ion collisions at RHIC energies and above.

Comments: 3 pages, 3 EPS figs