Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at [sqrt]sNN=2.76 TeV with the ATLAS Detector at the LHC
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 reconst...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/62796 https://orcid.org/0000-0002-7586-7253 |
| _version_ | 1826190164590854144 |
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| author | Taylor, Frank E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. |
| author_sort | Taylor, Frank E. |
| collection | MIT |
| description | 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. |
| first_indexed | 2024-09-23T08:36:05Z |
| format | Article |
| id | mit-1721.1/62796 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:36:05Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/627962022-09-30T09:52:30Z Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at [sqrt]sNN=2.76 TeV with the ATLAS Detector at the LHC Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at √sNN=2.76 TeV with the ATLAS Detector at the LHC Taylor, Frank E. Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. Taylor, Frank E. 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. United States. Dept. of Energy National Science Foundation (U.S.) 2011-05-10T15:19:37Z 2011-05-10T15:19:37Z 2010-12 2010-11 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/62796 Aad, G. et al. (ATLAS Collaboration) "Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at √sNN=2.76 TeV with the ATLAS Detector at the LHC." Phys. Rev. Lett. 105, 252303 (2010) [18 pages] © 2010 CERN, for the ATLAS Collaboration. https://orcid.org/0000-0002-7586-7253 en_US http://dx.doi.org/10.1103/PhysRevLett.105.252303 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Taylor, Frank E. Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at [sqrt]sNN=2.76 TeV with the ATLAS Detector at the LHC |
| title | Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at [sqrt]sNN=2.76 TeV with the ATLAS Detector at the LHC |
| title_full | Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at [sqrt]sNN=2.76 TeV with the ATLAS Detector at the LHC |
| title_fullStr | Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at [sqrt]sNN=2.76 TeV with the ATLAS Detector at the LHC |
| title_full_unstemmed | Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at [sqrt]sNN=2.76 TeV with the ATLAS Detector at the LHC |
| title_short | Observation of a Centrality-Dependent Dijet Asymmetry in Lead-Lead Collisions at [sqrt]sNN=2.76 TeV with the ATLAS Detector at the LHC |
| title_sort | observation of a centrality dependent dijet asymmetry in lead lead collisions at sqrt snn 2 76 tev with the atlas detector at the lhc |
| url | http://hdl.handle.net/1721.1/62796 https://orcid.org/0000-0002-7586-7253 |
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