Measurements of fiducial cross-sections for t[bar over t] production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector
Fiducial cross-sections for t[bar over t] production with one or two additional b-jets are reported, using an integrated luminosity of 20.3 fb[superscript −1] of proton–proton collisions at a centre-of-mass energy of 8 TeV at the Large Hadron Collider, collected with the ATLAS detector. The cross-...
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| Format: | Article |
| Language: | en_US |
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Springer-Verlag
2017
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| Online Access: | http://hdl.handle.net/1721.1/106524 https://orcid.org/0000-0002-7586-7253 |
| _version_ | 1811071858563350528 |
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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 | Fiducial cross-sections for t[bar over t] production with one or two additional b-jets are reported, using an integrated luminosity of 20.3 fb[superscript −1] of proton–proton collisions at a centre-of-mass energy of 8 TeV at the Large Hadron Collider, collected with the ATLAS detector. The cross-section times branching ratio for t[bar over t] events with at least one additional b-jet is measured to be 950 ±± 70 (stat.)[superscript +240][subscript −190] (syst.) fb in the lepton-plus-jets channel and 50 ±± 10 (stat.) [superscript +15][subscript −10] (syst.) fb in the eμeμ channel. The cross-section times branching ratio for events with at least two additional b-jets is measured to be 19.3 ±± 3.5 (stat.) ±± 5.7 (syst.) fb in the dilepton channel (eμ, μμ, and ee) using a method based on tight selection criteria, and 13.5 ±± 3.3 (stat.) ±± 3.6 (syst.) fb using a looser selection that allows the background normalisation to be extracted from data. The latter method also measures a value of 1.30 ±± 0.33 (stat.) ±± 0.28 (syst.)% for the ratio of t[bar over t] production with two additional b-jets to t[bar over t] production with any two additional jets. All measurements are in good agreement with recent theory predictions. |
| first_indexed | 2024-09-23T08:57:09Z |
| format | Article |
| id | mit-1721.1/106524 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:57:09Z |
| publishDate | 2017 |
| publisher | Springer-Verlag |
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| spelling | mit-1721.1/1065242022-09-26T09:27:21Z Measurements of fiducial cross-sections for t[bar over t] production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector Measurements of fiducial cross-sections for tt ¯ production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector Taylor, Frank E Massachusetts Institute of Technology. Department of Physics Taylor, Frank E Fiducial cross-sections for t[bar over t] production with one or two additional b-jets are reported, using an integrated luminosity of 20.3 fb[superscript −1] of proton–proton collisions at a centre-of-mass energy of 8 TeV at the Large Hadron Collider, collected with the ATLAS detector. The cross-section times branching ratio for t[bar over t] events with at least one additional b-jet is measured to be 950 ±± 70 (stat.)[superscript +240][subscript −190] (syst.) fb in the lepton-plus-jets channel and 50 ±± 10 (stat.) [superscript +15][subscript −10] (syst.) fb in the eμeμ channel. The cross-section times branching ratio for events with at least two additional b-jets is measured to be 19.3 ±± 3.5 (stat.) ±± 5.7 (syst.) fb in the dilepton channel (eμ, μμ, and ee) using a method based on tight selection criteria, and 13.5 ±± 3.3 (stat.) ±± 3.6 (syst.) fb using a looser selection that allows the background normalisation to be extracted from data. The latter method also measures a value of 1.30 ±± 0.33 (stat.) ±± 0.28 (syst.)% for the ratio of t[bar over t] production with two additional b-jets to t[bar over t] production with any two additional jets. All measurements are in good agreement with recent theory predictions. United States. Dept. of Energy National Science Foundation (U.S.) Brookhaven National Laboratory 2017-01-18T16:15:15Z 2017-01-18T16:15:15Z 2016-01 2015-08 Article http://purl.org/eprint/type/JournalArticle 1434-6044 1434-6052 http://hdl.handle.net/1721.1/106524 ATLAS Publications et al. “Measurements of Fiducial Cross-Sections for t [bar over t] Production with One or Two Additional B-Jets in Pp Collisions at √s = 8 TeV Using the ATLAS Detector.” The European Physical Journal C 76.1 (2016): n. pag. © 2016 CERN for the benefit of the ATLAS collaboration https://orcid.org/0000-0002-7586-7253 en_US http://dx.doi.org/10.1140/epjc/s10052-015-3852-4 The European Physical Journal C Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer |
| spellingShingle | Taylor, Frank E Measurements of fiducial cross-sections for t[bar over t] production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector |
| title | Measurements of fiducial cross-sections for t[bar over t] production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector |
| title_full | Measurements of fiducial cross-sections for t[bar over t] production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector |
| title_fullStr | Measurements of fiducial cross-sections for t[bar over t] production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector |
| title_full_unstemmed | Measurements of fiducial cross-sections for t[bar over t] production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector |
| title_short | Measurements of fiducial cross-sections for t[bar over t] production with one or two additional b-jets in pp collisions at √s = 8 TeV using the ATLAS detector |
| title_sort | measurements of fiducial cross sections for t bar over t production with one or two additional b jets in pp collisions at √s 8 tev using the atlas detector |
| url | http://hdl.handle.net/1721.1/106524 https://orcid.org/0000-0002-7586-7253 |
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