Casalderrey-Solana, Jorge, Milhano, Jose Guilherme and Quiroga-Arias, Paloma (2012), "Out of medium fragmentation from long-lived jet showers", PHYSICS LETTERS B, 710, 1: 175-181.
Abstract: We study the time structure of vacuum jet evolution via a simple
uncertainty principle estimate in the kinematic range explored by
current heavy ion collisions at the LHC. We observe that a large
fraction of the partonic splittings occur at large times, of the order
of several fm. We compare the time distribution of vacuum splittings
with the distribution of path lengths traversed by jets in a heavy ion
collision. We find that if no medium induced modification of the jet
dynamics were present, a very large fraction (larger than 80% for
inclusive jets) of the jet splittings would occur outside of the medium.
We confront this observation with current available data on jet
properties in heavy ion collisions and discuss its implications for the
dynamics of jet-medium interactions. (C) 2012 Elsevier B.V. All rights
reserved.
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