Direct Bound on the Total Decay Width of the Top Quark in pp̅ Collisions at √s=1.96 TeV
We present the first direct experimental bound on the total decay width of the top quark, Γ[subscript t], using 955 pb[superscript -1] of the Tevatron’s pp̅ collisions recorded by the Collider Detector at Fermilab. We identify 253 top-antitop pair candidate events. The distribution of reconstructed...
| 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/1721.1/51352 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1826194285421133824 |
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| author | Choudalakis, Georgios Gomez-Ceballos, Guillelmo Hahn, Kristian Allan Henderson, C. Knuteson, Bruce O. Paus, Christoph M. E. Xie, Si Bauer, Gerry P Makhoul, Khaldoun |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Choudalakis, Georgios Gomez-Ceballos, Guillelmo Hahn, Kristian Allan Henderson, C. Knuteson, Bruce O. Paus, Christoph M. E. Xie, Si Bauer, Gerry P Makhoul, Khaldoun |
| author_sort | Choudalakis, Georgios |
| collection | MIT |
| description | We present the first direct experimental bound on the total decay width of the top quark, Γ[subscript t], using 955 pb[superscript -1] of the Tevatron’s pp̅ collisions recorded by the Collider Detector at Fermilab. We identify 253 top-antitop pair candidate events. The distribution of reconstructed top quark mass from these events is fitted to templates representing different values of the top quark width. Using a confidence interval based on likelihood-ratio ordering, we extract an upper limit at 95% C.L. of Γ[subscript t]<13.1 GeV for an assumed top quark mass of 175 GeV/c[superscript 2]. |
| first_indexed | 2024-09-23T09:53:42Z |
| format | Article |
| id | mit-1721.1/51352 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:53:42Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/513522023-02-26T08:11:01Z Direct Bound on the Total Decay Width of the Top Quark in pp̅ Collisions at √s=1.96 TeV Choudalakis, Georgios Gomez-Ceballos, Guillelmo Hahn, Kristian Allan Henderson, C. Knuteson, Bruce O. Paus, Christoph M. E. Xie, Si Bauer, Gerry P Makhoul, Khaldoun Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Bauer, Gerry P. Bauer, Gerry P. Choudalakis, Georgios Gomez-Ceballos, Guillelmo Hahn, Kristian Allan Henderson, C. Knuteson, Bruce O. Makhoul, K. Paus, Christoph M. E. Xie, Si We present the first direct experimental bound on the total decay width of the top quark, Γ[subscript t], using 955 pb[superscript -1] of the Tevatron’s pp̅ collisions recorded by the Collider Detector at Fermilab. We identify 253 top-antitop pair candidate events. The distribution of reconstructed top quark mass from these events is fitted to templates representing different values of the top quark width. Using a confidence interval based on likelihood-ratio ordering, we extract an upper limit at 95% C.L. of Γ[subscript t]<13.1 GeV for an assumed top quark mass of 175 GeV/c[superscript 2]. 2010-02-03T15:01:20Z 2010-02-03T15:01:20Z 2009-01 2008-08 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/51352 Aaltonen, T. et al. “Direct Bound on the Total Decay Width of the Top Quark in pp-bar Collisions at s=1.96 TeV.” Physical Review Letters 102.4 (2009): 042001. (C) 2010 The American Physical Society. https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevLett.102.042001 Phyisical 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 | Choudalakis, Georgios Gomez-Ceballos, Guillelmo Hahn, Kristian Allan Henderson, C. Knuteson, Bruce O. Paus, Christoph M. E. Xie, Si Bauer, Gerry P Makhoul, Khaldoun Direct Bound on the Total Decay Width of the Top Quark in pp̅ Collisions at √s=1.96 TeV |
| title | Direct Bound on the Total Decay Width of the Top Quark in pp̅ Collisions at √s=1.96 TeV |
| title_full | Direct Bound on the Total Decay Width of the Top Quark in pp̅ Collisions at √s=1.96 TeV |
| title_fullStr | Direct Bound on the Total Decay Width of the Top Quark in pp̅ Collisions at √s=1.96 TeV |
| title_full_unstemmed | Direct Bound on the Total Decay Width of the Top Quark in pp̅ Collisions at √s=1.96 TeV |
| title_short | Direct Bound on the Total Decay Width of the Top Quark in pp̅ Collisions at √s=1.96 TeV |
| title_sort | direct bound on the total decay width of the top quark in pp collisions at √s 1 96 tev |
| url | http://hdl.handle.net/1721.1/51352 https://orcid.org/0000-0002-6047-4211 |
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