Measurement of the Pseudorapidity and Centrality Dependence of the Transverse Energy Density in Pb-Pb Collisions at √sNN=2.76  TeV

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dc.citation.firstpage152303en_US
dc.citation.issueNumber15en_US
dc.citation.journalTitlePhysical Review Lettersen_US
dc.citation.volumeNumber109en_US
dc.contributor.authorAdair, A.en_US
dc.contributor.authorBoulahouache, C.en_US
dc.contributor.authorEcklund, K.M.en_US
dc.contributor.authorGeurts, F.J.M.en_US
dc.contributor.authorPadley, B.P.en_US
dc.contributor.authorRedjimi, R.en_US
dc.contributor.authorRoberts, J.en_US
dc.contributor.authorZabel, J.en_US
dc.date.accessioned2015-09-08T14:37:25Z
dc.date.available2015-09-08T14:37:25Z
dc.date.issued2012en_US
dc.description.abstractThe transverse energy (ET) in Pb-Pb collisions at 2.76 TeV nucleon-nucleon center-of-mass energy (√sNN) has been measured over a broad range of pseudorapidity (η) and collision centrality by using the CMS detector at the LHC. The transverse energy density per unit pseudorapidity (dET/dη) increases faster with collision energy than the charged particle multiplicity. This implies that the mean energy per particle is increasing with collision energy. At all pseudorapidities, the transverse energy per participating nucleon increases with the centrality of the collision. The ratio of transverse energy per unit pseudorapidity in peripheral to central collisions varies significantly as the pseudorapidity increases from η=0 to |η|=5.0. For the 5% most central collisions, the energy density per unit volume is estimated to be about 14  GeV/fm3 at a time of 1  fm/c after the collision. This is about 100 times larger than normal nuclear matter density and a factor of 2.6 times higher than the energy density reported at √sNN=200  GeV at the Relativistic Heavy Ion Collider.en_US
dc.identifier.citationAdair, A., Boulahouache, C., Ecklund, K.M., et al.. "Measurement of the Pseudorapidity and Centrality Dependence of the Transverse Energy Density in Pb-Pb Collisions at √sNN=2.76  TeV." <i>Physical Review Letters,</i> 109, no. 15 (2012) American Physical Society: 152303. http://dx.doi.org/10.1103/PhysRevLett.109.152303.
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevLett.109.152303en_US
dc.identifier.urihttps://hdl.handle.net/1911/81627
dc.language.isoengen_US
dc.publisherAmerican Physical Society
dc.rightsThis is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en_US
dc.titleMeasurement of the Pseudorapidity and Centrality Dependence of the Transverse Energy Density in Pb-Pb Collisions at √sNN=2.76  TeVen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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