Measurement of the top-quark pair-production cross section in events with two leptons and bottom-quark jets using the full CDF data set
We present a measurement of the top-quark pair production cross section in proton-antiproton collisions at √s = 1.96 TeV. The data were collected at the Fermilab Tevatron by the CDF II detector and correspond to an integrated luminosity of 8.8 fb[superscript −1], representing the complete CDF Run...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/84734 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1826212587834966016 |
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| author | Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. |
| author_sort | Gomez-Ceballos, Guillelmo |
| collection | MIT |
| description | We present a measurement of the top-quark pair production cross section in proton-antiproton collisions at √s = 1.96 TeV. The data were collected at the Fermilab Tevatron by the CDF II detector and correspond to an integrated luminosity of 8.8 fb[superscript −1], representing the complete CDF Run II data set. We select events consistent with the production of top-quark pairs by requiring the presence of two reconstructed leptons, an imbalance in the total event transverse momentum, and jets. At least one jet is required to be identified as consistent with the fragmentation of a bottom quark using a secondary-vertex-finding algorithm. The 246 candidate events are estimated to have a signal purity of 91%. We measure a cross section of σ[subscript t[bar over t]] = 7.09 ± 0.84 pb, assuming a top-quark mass of 172.5 GeV/c[superscript 2]. The results are consistent with the standard model as predicted by next-to-leading-order calculations. |
| first_indexed | 2024-09-23T15:27:56Z |
| format | Article |
| id | mit-1721.1/84734 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:27:56Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/847342022-10-02T02:43:30Z Measurement of the top-quark pair-production cross section in events with two leptons and bottom-quark jets using the full CDF data set Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. We present a measurement of the top-quark pair production cross section in proton-antiproton collisions at √s = 1.96 TeV. The data were collected at the Fermilab Tevatron by the CDF II detector and correspond to an integrated luminosity of 8.8 fb[superscript −1], representing the complete CDF Run II data set. We select events consistent with the production of top-quark pairs by requiring the presence of two reconstructed leptons, an imbalance in the total event transverse momentum, and jets. At least one jet is required to be identified as consistent with the fragmentation of a bottom quark using a secondary-vertex-finding algorithm. The 246 candidate events are estimated to have a signal purity of 91%. We measure a cross section of σ[subscript t[bar over t]] = 7.09 ± 0.84 pb, assuming a top-quark mass of 172.5 GeV/c[superscript 2]. The results are consistent with the standard model as predicted by next-to-leading-order calculations. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2014-02-10T16:18:59Z 2014-02-10T16:18:59Z 2013-11 2013-04 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1550-2368 http://hdl.handle.net/1721.1/84734 Aaltonen, T., S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, G. Apollinari, et al. “Measurement of the top-quark pair-production cross section in events with two leptons and bottom-quark jets using the full CDF data set.” Physical Review D 88, no. 9 (November 2013). © the American Physical Society https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevD.88.091103 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 American Physical Society |
| spellingShingle | Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Measurement of the top-quark pair-production cross section in events with two leptons and bottom-quark jets using the full CDF data set |
| title | Measurement of the top-quark pair-production cross section in events with two leptons and bottom-quark jets using the full CDF data set |
| title_full | Measurement of the top-quark pair-production cross section in events with two leptons and bottom-quark jets using the full CDF data set |
| title_fullStr | Measurement of the top-quark pair-production cross section in events with two leptons and bottom-quark jets using the full CDF data set |
| title_full_unstemmed | Measurement of the top-quark pair-production cross section in events with two leptons and bottom-quark jets using the full CDF data set |
| title_short | Measurement of the top-quark pair-production cross section in events with two leptons and bottom-quark jets using the full CDF data set |
| title_sort | measurement of the top quark pair production cross section in events with two leptons and bottom quark jets using the full cdf data set |
| url | http://hdl.handle.net/1721.1/84734 https://orcid.org/0000-0002-6047-4211 |
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