A Monte Carlo model for 'jet quenching'
2009 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 60, no 4, 617-632 p.Article in journal (Refereed) Published
We have developed the Monte Carlo simulation program JEWEL 1.0 (Jet Evolution With Energy Loss), which interfaces a perturbative final-state parton shower with medium effects occurring in ultra-relativistic heavy-ion collisions. This is done by comparing for each jet fragment the probability of further perturbative splitting with the density-dependent probability of scattering with the medium. A simple hadronisation mechanism is included. In the absence of medium effects, we validate JEWEL against a set of benchmark jet measurements. For elastic interactions with the medium, we characterise not only the medium-induced modification of the jet, but also the jet-induced modification of the medium. Our main physical result is the observation that collisional and radiative medium modifications lead to characteristic differences in the jet fragmentation pattern, which persist above a soft background cut. We argue that this should allow one to disentangle collisional and radiative parton energy loss mechanisms by measuring the n-jet fraction or a class of jet shape observables.
Place, publisher, year, edition, pages
2009. Vol. 60, no 4, 617-632 p.
IdentifiersURN: urn:nbn:se:uu:diva-129094DOI: 10.1140/epjc/s10052-009-0941-2ISI: 000265215100007OAI: oai:DiVA.org:uu-129094DiVA: diva2:337568