title: Universal flow-driven conical emission in ultrarelativistic heavy-ion collisions.
abstract: The double-peak structure observed in soft-hard hadron correlations is commonly interpreted as a signature for a Mach cone generated by a supersonic jet interacting with the hot and dense medium created in ultrarelativistic heavy-ion collisions. We show that it can also arise due to averaging over many jet events in a transversally expanding background. We find that the jet-induced away-side yield does not depend on the details of the energy-momentum deposition in the plasma, the jet velocity, or the system size. Our claim can be experimentally tested by comparing soft-hard correlations induced by heavy-flavor jets with those generated by light-flavor jets.
authors.affiliation: Department of Physics, Columbia University, New York, 10027, USA.
authors.forename: Barbara
authors.initials: B
authors.lastname: Betz
authors.forename: Jorge
authors.initials: J
authors.lastname: Noronha
authors.forename: Giorgio
authors.initials: G
authors.lastname: Torrieri
authors.forename: Miklos
authors.initials: M
authors.lastname: Gyulassy
authors.forename: Dirk H
authors.initials: DH
authors.lastname: Rischke