Centrality and rapidity dependence of inclusive jet production in √s[subscript NN] = 5.02 TeV proton–lead collisions with the ATLAS detector
Measurements of the centrality and rapidity dependence of inclusive jet production in √s[subscript NN] = 5.02 TeV proton–lead (p+Pb) collisions and the jet cross-section in √s = 2.76 TeV proton–proton collisions are presented. These quantities are measured in datasets corresponding to an integrated...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2015
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| Online Access: | http://hdl.handle.net/1721.1/98207 https://orcid.org/0000-0002-7586-7253 |
| _version_ | 1811097401074647040 |
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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 | Measurements of the centrality and rapidity dependence of inclusive jet production in √s[subscript NN] = 5.02 TeV proton–lead (p+Pb) collisions and the jet cross-section in √s = 2.76 TeV proton–proton collisions are presented. These quantities are measured in datasets corresponding to an integrated luminosity of 27.8 nb[superscript −1] and 4.0 pb[superscript −1], respectively, recorded with the ATLAS detector at the Large Hadron Collider in 2013. The p+Pb collision centrality was characterised using the total transverse energy measured in the pseudorapidity interval −4.9<η<−3.2 in the direction of the lead beam. Results are presented for the double-differential per-collision yields as a function of jet rapidity and transverse momentum (p[subscript T]) for minimum-bias and centrality-selected p+Pb collisions, and are compared to the jet rate from the geometric expectation. The total jet yield in minimum-bias events is slightly enhanced above the expectation in a p[subscript T]-dependent manner but is consistent with the expectation within uncertainties. The ratios of jet spectra from different centrality selections show a strong modification of jet production at all p[subscript T] at forward rapidities and for large p[subscript T] at mid-rapidity, which manifests as a suppression of the jet yield in central events and an enhancement in peripheral events. These effects imply that the factorisation between hard and soft processes is violated at an unexpected level in proton–nucleus collisions. Furthermore, the modifications at forward rapidities are found to be a function of the total jet energy only, implying that the violations may have a simple dependence on the hard parton–parton kinematics. |
| first_indexed | 2024-09-23T16:58:56Z |
| format | Article |
| id | mit-1721.1/98207 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:58:56Z |
| publishDate | 2015 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/982072022-10-03T09:33:52Z Centrality and rapidity dependence of inclusive jet production in √s[subscript NN] = 5.02 TeV proton–lead collisions with the ATLAS detector Taylor, Frank E. Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. Measurements of the centrality and rapidity dependence of inclusive jet production in √s[subscript NN] = 5.02 TeV proton–lead (p+Pb) collisions and the jet cross-section in √s = 2.76 TeV proton–proton collisions are presented. These quantities are measured in datasets corresponding to an integrated luminosity of 27.8 nb[superscript −1] and 4.0 pb[superscript −1], respectively, recorded with the ATLAS detector at the Large Hadron Collider in 2013. The p+Pb collision centrality was characterised using the total transverse energy measured in the pseudorapidity interval −4.9<η<−3.2 in the direction of the lead beam. Results are presented for the double-differential per-collision yields as a function of jet rapidity and transverse momentum (p[subscript T]) for minimum-bias and centrality-selected p+Pb collisions, and are compared to the jet rate from the geometric expectation. The total jet yield in minimum-bias events is slightly enhanced above the expectation in a p[subscript T]-dependent manner but is consistent with the expectation within uncertainties. The ratios of jet spectra from different centrality selections show a strong modification of jet production at all p[subscript T] at forward rapidities and for large p[subscript T] at mid-rapidity, which manifests as a suppression of the jet yield in central events and an enhancement in peripheral events. These effects imply that the factorisation between hard and soft processes is violated at an unexpected level in proton–nucleus collisions. Furthermore, the modifications at forward rapidities are found to be a function of the total jet energy only, implying that the violations may have a simple dependence on the hard parton–parton kinematics. United States. Dept. of Energy National Science Foundation (U.S.) Brookhaven National Laboratory 2015-08-24T16:37:56Z 2015-08-24T16:37:56Z 2015-07 2015-04 Article http://purl.org/eprint/type/JournalArticle 03702693 http://hdl.handle.net/1721.1/98207 Aad, G., et al. “Centrality and Rapidity Dependence of Inclusive Jet Production in √s[subscript NN] = 5.02 TeV Proton–lead Collisions with the ATLAS Detector.” Physics Letters B 748 (September 2015): 392–413. © 2015 CERN for the benefit of the ATLAS Collaboration https://orcid.org/0000-0002-7586-7253 en_US http://dx.doi.org/10.1016/j.physletb.2015.07.023 Physics Letters B Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Elsevier Elsevier |
| spellingShingle | Taylor, Frank E. Centrality and rapidity dependence of inclusive jet production in √s[subscript NN] = 5.02 TeV proton–lead collisions with the ATLAS detector |
| title | Centrality and rapidity dependence of inclusive jet production in √s[subscript NN] = 5.02 TeV proton–lead collisions with the ATLAS detector |
| title_full | Centrality and rapidity dependence of inclusive jet production in √s[subscript NN] = 5.02 TeV proton–lead collisions with the ATLAS detector |
| title_fullStr | Centrality and rapidity dependence of inclusive jet production in √s[subscript NN] = 5.02 TeV proton–lead collisions with the ATLAS detector |
| title_full_unstemmed | Centrality and rapidity dependence of inclusive jet production in √s[subscript NN] = 5.02 TeV proton–lead collisions with the ATLAS detector |
| title_short | Centrality and rapidity dependence of inclusive jet production in √s[subscript NN] = 5.02 TeV proton–lead collisions with the ATLAS detector |
| title_sort | centrality and rapidity dependence of inclusive jet production in √s subscript nn 5 02 tev proton lead collisions with the atlas detector |
| url | http://hdl.handle.net/1721.1/98207 https://orcid.org/0000-0002-7586-7253 |
| work_keys_str_mv | AT taylorfranke centralityandrapiditydependenceofinclusivejetproductioninssubscriptnn502tevprotonleadcollisionswiththeatlasdetector |