Measurement of the tt-bar production cross section in pp-bar collisions at [sqrt]s=1.96 TeV using soft electron b-tagging
We present a measurement of the top-quark pair-production cross section in pp̅ collisions at [sqrt]s=1.96 TeV using a data sample corresponding to 1.7 fb-1 of integrated luminosity collected with the Collider Detector at Fermilab. We reconstruct tt̅ events in the lepton+jets channel, consisting...
| Main Authors: | , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2010
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| Online Access: | http://hdl.handle.net/1721.1/57491 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1811085739389091840 |
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| author | Paus, Christoph M. E. Choudalakis, Georgios Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Henderson, C. Knuteson, Bruce O. Xie, Si Bauer, Gerry P Makhoul, Khaldoun |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Paus, Christoph M. E. Choudalakis, Georgios Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Henderson, C. Knuteson, Bruce O. Xie, Si Bauer, Gerry P Makhoul, Khaldoun |
| author_sort | Paus, Christoph M. E. |
| collection | MIT |
| description | We present a measurement of the top-quark pair-production cross section in pp̅ collisions at [sqrt]s=1.96 TeV using a data sample corresponding to 1.7 fb-1 of integrated luminosity collected with the Collider Detector at Fermilab. We reconstruct tt̅ events in the lepton+jets channel, consisting of eν+jets and μν+jets final states. The dominant background is the production of W bosons in association with multiple jets. To suppress this background, we identify electrons from the semileptonic decay of heavy-flavor jets (“soft electron tags”). From a sample of 2196 candidate events, we obtain 120 tagged events with a background expectation of 51±3 events, corresponding to a cross section of σtt̅ =7.8±2.4(stat)±1.6(syst)±0.5(lumi) pb. We assume a top-quark mass of 175 GeV/c2. This is the first measurement of the tt̅ cross section with soft electron tags in run II of the Tevatron. |
| first_indexed | 2024-09-23T13:14:54Z |
| format | Article |
| id | mit-1721.1/57491 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:14:54Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/574912023-02-26T10:27:08Z Measurement of the tt-bar production cross section in pp-bar collisions at [sqrt]s=1.96 TeV using soft electron b-tagging Measurement of the tt̅ production cross section in pp̅ collisions at √s=1.96 TeV using soft electron b-tagging Paus, Christoph M. E. Choudalakis, Georgios Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Henderson, C. Knuteson, Bruce O. Xie, Si Bauer, Gerry P Makhoul, Khaldoun Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Paus, Christoph M. E. Paus, Christoph M. E. Bauer, Gerry P. Choudalakis, Georgios Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Henderson, C. Knuteson, Bruce O. Makhoul, K. Xie, Si We present a measurement of the top-quark pair-production cross section in pp̅ collisions at [sqrt]s=1.96 TeV using a data sample corresponding to 1.7 fb-1 of integrated luminosity collected with the Collider Detector at Fermilab. We reconstruct tt̅ events in the lepton+jets channel, consisting of eν+jets and μν+jets final states. The dominant background is the production of W bosons in association with multiple jets. To suppress this background, we identify electrons from the semileptonic decay of heavy-flavor jets (“soft electron tags”). From a sample of 2196 candidate events, we obtain 120 tagged events with a background expectation of 51±3 events, corresponding to a cross section of σtt̅ =7.8±2.4(stat)±1.6(syst)±0.5(lumi) pb. We assume a top-quark mass of 175 GeV/c2. This is the first measurement of the tt̅ cross section with soft electron tags in run II of the Tevatron. United States Department of Energy National Science Foundation Istituto Nazionale di Fisica Nucleare of Italy Ministry of Education, Culture, Sports, Science and Technology of Japan Natural Sciences and Engineering Research Council of Canada National Science Council of the Republic of China Swiss National Science Foundation Alfred P. Sloan Foundation Bundesministerium für Bildung und Forschung, Germany World Class University Program (Korea) National Research Foundation of Korea Science and Technology Facilities Council, United Kingdom Institut National de Physique Nucleaire et Physique des Particules/CNRS Russian Foundation for Basic Research Ministerio de Ciencia e Innovación, Spain Programa Consolider-Ingenio 2010, Spain Slovak R&D Agency Academy of Finland 2010-08-10T21:34:55Z 2010-08-10T21:34:55Z 2010-05 2010-02 Article http://purl.org/eprint/type/JournalArticle 1550-7998 http://hdl.handle.net/1721.1/57491 CDF Collaboration et al. “Measurement of the tt-bar production cross section in pp-bar collisions at s=1.96 TeV using soft electron b-tagging.” Physical Review D 81.9 (2010): 092002. © 2010 The American Physical Society. https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevD.81.092002 Physical Review D 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 | Paus, Christoph M. E. Choudalakis, Georgios Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Henderson, C. Knuteson, Bruce O. Xie, Si Bauer, Gerry P Makhoul, Khaldoun Measurement of the tt-bar production cross section in pp-bar collisions at [sqrt]s=1.96 TeV using soft electron b-tagging |
| title | Measurement of the tt-bar production cross section in pp-bar collisions at [sqrt]s=1.96 TeV using soft electron b-tagging |
| title_full | Measurement of the tt-bar production cross section in pp-bar collisions at [sqrt]s=1.96 TeV using soft electron b-tagging |
| title_fullStr | Measurement of the tt-bar production cross section in pp-bar collisions at [sqrt]s=1.96 TeV using soft electron b-tagging |
| title_full_unstemmed | Measurement of the tt-bar production cross section in pp-bar collisions at [sqrt]s=1.96 TeV using soft electron b-tagging |
| title_short | Measurement of the tt-bar production cross section in pp-bar collisions at [sqrt]s=1.96 TeV using soft electron b-tagging |
| title_sort | measurement of the tt bar production cross section in pp bar collisions at sqrt s 1 96 tev using soft electron b tagging |
| url | http://hdl.handle.net/1721.1/57491 https://orcid.org/0000-0002-6047-4211 |
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