Measurement of jet pT correlations in Pb + Pb and pp collisions at sNN=2.76TeV with the ATLAS detector
Measurements of dijet pT correlations in Pb+Pb and pp collisions at a nucleon–nucleon centre-of-mass energy of sNN=2.76TeV are presented. The measurements are performed with the ATLAS detector at the Large Hadron Collider using Pb+Pb and pp data samples corresponding to integrated luminosities of 0....
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| Format: | Journal article |
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Elsevier
2017
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| _version_ | 1826289015884611584 |
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| author | ATLAS Collaboration |
| author2 | Gwenlan, C |
| author_facet | Gwenlan, C ATLAS Collaboration |
| author_sort | ATLAS Collaboration |
| collection | OXFORD |
| description | Measurements of dijet pT correlations in Pb+Pb and pp collisions at a nucleon–nucleon centre-of-mass energy of sNN=2.76TeV are presented. The measurements are performed with the ATLAS detector at the Large Hadron Collider using Pb+Pb and pp data samples corresponding to integrated luminosities of 0.14nb−1 and 4.0pb−1, respectively. Jets are reconstructed using the anti-kt algorithm with radius parameter values R=0.3 and R=0.4. A background subtraction procedure is applied to correct the jets for the large underlying event present in Pb+Pb collisions. The leading and sub-leading jet transverse momenta are denoted pT1 and pT2. An unfolding procedure is applied to the two-dimensional (pT1,pT2) distributions to account for experimental effects in the measurement of both jets. Distributions of (1/N)dN/dxJ, where xJ=pT2/pT1, are presented as a function of pT1 and collision centrality. The distributions are found to be similar in peripheral Pb+Pb collisions and pp collisions, but highly modified in central Pb+Pb collisions. Similar features are present in both the R=0.3 and R=0.4 results, indicating that the effects of the underlying event are properly accounted for in the measurement. The results are qualitatively consistent with expectations from partonic energy loss models. |
| first_indexed | 2024-03-07T02:22:28Z |
| format | Journal article |
| id | oxford-uuid:a468e176-0914-4a09-936b-51e28f742cb1 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T02:22:28Z |
| publishDate | 2017 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:a468e176-0914-4a09-936b-51e28f742cb12022-03-27T02:33:44ZMeasurement of jet pT correlations in Pb + Pb and pp collisions at sNN=2.76TeV with the ATLAS detectorJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a468e176-0914-4a09-936b-51e28f742cb1Symplectic Elements at OxfordElsevier2017ATLAS CollaborationGwenlan, CMeasurements of dijet pT correlations in Pb+Pb and pp collisions at a nucleon–nucleon centre-of-mass energy of sNN=2.76TeV are presented. The measurements are performed with the ATLAS detector at the Large Hadron Collider using Pb+Pb and pp data samples corresponding to integrated luminosities of 0.14nb−1 and 4.0pb−1, respectively. Jets are reconstructed using the anti-kt algorithm with radius parameter values R=0.3 and R=0.4. A background subtraction procedure is applied to correct the jets for the large underlying event present in Pb+Pb collisions. The leading and sub-leading jet transverse momenta are denoted pT1 and pT2. An unfolding procedure is applied to the two-dimensional (pT1,pT2) distributions to account for experimental effects in the measurement of both jets. Distributions of (1/N)dN/dxJ, where xJ=pT2/pT1, are presented as a function of pT1 and collision centrality. The distributions are found to be similar in peripheral Pb+Pb collisions and pp collisions, but highly modified in central Pb+Pb collisions. Similar features are present in both the R=0.3 and R=0.4 results, indicating that the effects of the underlying event are properly accounted for in the measurement. The results are qualitatively consistent with expectations from partonic energy loss models. |
| spellingShingle | ATLAS Collaboration Measurement of jet pT correlations in Pb + Pb and pp collisions at sNN=2.76TeV with the ATLAS detector |
| title | Measurement of jet pT correlations in Pb + Pb and pp collisions at sNN=2.76TeV with the ATLAS detector |
| title_full | Measurement of jet pT correlations in Pb + Pb and pp collisions at sNN=2.76TeV with the ATLAS detector |
| title_fullStr | Measurement of jet pT correlations in Pb + Pb and pp collisions at sNN=2.76TeV with the ATLAS detector |
| title_full_unstemmed | Measurement of jet pT correlations in Pb + Pb and pp collisions at sNN=2.76TeV with the ATLAS detector |
| title_short | Measurement of jet pT correlations in Pb + Pb and pp collisions at sNN=2.76TeV with the ATLAS detector |
| title_sort | measurement of jet pt correlations in pb pb and pp collisions at snn 2 76tev with the atlas detector |
| work_keys_str_mv | AT atlascollaboration measurementofjetptcorrelationsinpbpbandppcollisionsatsnn276tevwiththeatlasdetector |