Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/46042

TitleObservation of a centrality-dependent dijet asymmetry in lead-lead collisions at √sNN=2.76 Tev with the ATLASO detector at the LHC
Author(s)Onofre, A.
Castro, Nuno Filipe Silva Fernandes
ATLAS Collaboration
Issue date2010
PublisherAmerican Physical Society
JournalPhysical Review Letters
Citationad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., . . . Zwalinski, L. (2010). Observation of a centrality-dependent dijet asymmetry in lead-lead collisions at √sNN=2.76 Tev with the ATLASO detector at the LHC. Physical Review Letters, 105(25). doi. 10.1103/PhysRevLett.105.252303
Abstract(s)By using the ATLAS detector, observations have been made of a centrality-dependent dijet asymmetry in the collisions of lead ions at the Large Hadron Collider. In a sample of lead-lead events with a per-nucleon center of mass energy of 2.76 TeV, selected with a minimum bias trigger, jets are reconstructed in fine-grained, longitudinally segmented electromagnetic and hadronic calorimeters. The transverse energies of dijets in opposite hemispheres are observed to become systematically more unbalanced with increasing event centrality leading to a large number of events which contain highly asymmetric dijets. This is the first observation of an enhancement of events with such large dijet asymmetries, not observed in proton-proton collisions, which may point to an interpretation in terms of strong jet energy loss in a hot, dense medium.
TypeArticle
URIhttp://hdl.handle.net/1822/46042
DOI10.1103/PhysRevLett.105.252303
ISSN0031-9007
e-ISSN1079-7114
Peer-Reviewedyes
AccessOpen access
Appears in Collections:LIP - Artigos/papers

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