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A Monte Carlo model for 'jet quenching'
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
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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
Abstract [en]

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.
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-129094DOI: 10.1140/epjc/s10052-009-0941-2ISI: 000265215100007OAI: oai:DiVA.org:uu-129094DiVA: diva2:337568
Available from: 2010-08-06 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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