Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at sqrt[s]=7 TeV
The first measurement of vector-boson production associated with a top quark-antiquark pair in proton-proton collisions at √s=7 TeV is presented. The results are based on a data set corresponding to an integrated luminosity of 5.0 fb-1, recorded by the CMS detector at the LHC in 2011. The measurem...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2013
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| Online Access: | http://hdl.handle.net/1721.1/81368 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 |
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| author | Apyan, Aram Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Dutta, Valentina Gomez-Ceballos, Guillelmo Goncharov, Maxim Kim, Y. Klute, Markus Krajczar, Krisztian F. Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Rudolph, Matthew Scott Stephans, George S. F. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wolf, Roger Wyslouch, Boleslaw Yang, Mingming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Bauer, Gerry P Wyslouch, Victoria Levin, Andrew Michael Luckey Jr, P David Ma, Teng Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Apyan, Aram Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Dutta, Valentina Gomez-Ceballos, Guillelmo Goncharov, Maxim Kim, Y. Klute, Markus Krajczar, Krisztian F. Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Rudolph, Matthew Scott Stephans, George S. F. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wolf, Roger Wyslouch, Boleslaw Yang, Mingming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Bauer, Gerry P Wyslouch, Victoria Levin, Andrew Michael Luckey Jr, P David Ma, Teng Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C |
| author_sort | Apyan, Aram |
| collection | MIT |
| description | The first measurement of vector-boson production associated with a top quark-antiquark pair in proton-proton collisions at √s=7 TeV is presented. The results are based on a data set corresponding to an integrated luminosity of 5.0 fb-1, recorded by the CMS detector at the LHC in 2011. The measurement is performed in two independent channels through a trilepton analysis of tt̅ Z events and a same-sign dilepton analysis of tt̅ V (V=W or Z) events. In the trilepton channel a direct measurement of the tt̅ Z cross section σtt̅ Z=0.28[subscript -0.11][superscript +0.14] (stat)[subscript -0.03][superscript +0.06] (syst) pb is obtained. In the dilepton channel a measurement of the tt̅ V cross section yields σtt̅ V=0.43[subscript -0.15][superscript +0.17] (stat)[subscript -0.07][superscript +0.09] (syst) pb. These measurements have a significance, respectively, of 3.3 and 3.0 standard deviations from the background hypotheses and are compatible, within uncertainties, with the corresponding next-to-leading order predictions of 0.137[subscript -0.016][superscript +0.012] and 0.306[subscript -0.053][superscript +0.031] pb. |
| first_indexed | 2024-09-23T08:54:51Z |
| format | Article |
| id | mit-1721.1/81368 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:54:51Z |
| publishDate | 2013 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/813682023-02-26T04:22:09Z Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at sqrt[s]=7 TeV Apyan, Aram Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Dutta, Valentina Gomez-Ceballos, Guillelmo Goncharov, Maxim Kim, Y. Klute, Markus Krajczar, Krisztian F. Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Rudolph, Matthew Scott Stephans, George S. F. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wolf, Roger Wyslouch, Boleslaw Yang, Mingming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Bauer, Gerry P Wyslouch, Victoria Levin, Andrew Michael Luckey Jr, P David Ma, Teng Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Apyan, Aram Bauer, Gerry P. Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Dutta, Valentina Gomez-Ceballos, Guillelmo Goncharov, Maxim Kim, Y. Klute, Markus Krajczar, Krisztian F. Levin, A. Luckey, P. David Ma, T. Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E. Roland, Gunther M. Rudolph, Matthew Scott Stephans, George S. F. Stockli, F. Sumorok, Konstanty C. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wolf, Roger Wyslouch, Boleslaw Yang, Mingming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Zhukova, Victoria The first measurement of vector-boson production associated with a top quark-antiquark pair in proton-proton collisions at √s=7 TeV is presented. The results are based on a data set corresponding to an integrated luminosity of 5.0 fb-1, recorded by the CMS detector at the LHC in 2011. The measurement is performed in two independent channels through a trilepton analysis of tt̅ Z events and a same-sign dilepton analysis of tt̅ V (V=W or Z) events. In the trilepton channel a direct measurement of the tt̅ Z cross section σtt̅ Z=0.28[subscript -0.11][superscript +0.14] (stat)[subscript -0.03][superscript +0.06] (syst) pb is obtained. In the dilepton channel a measurement of the tt̅ V cross section yields σtt̅ V=0.43[subscript -0.15][superscript +0.17] (stat)[subscript -0.07][superscript +0.09] (syst) pb. These measurements have a significance, respectively, of 3.3 and 3.0 standard deviations from the background hypotheses and are compatible, within uncertainties, with the corresponding next-to-leading order predictions of 0.137[subscript -0.016][superscript +0.012] and 0.306[subscript -0.053][superscript +0.031] pb. United States. Dept. of Energy National Science Foundation (U.S.) 2013-10-09T20:15:05Z 2013-10-09T20:15:05Z 2013-04 2013-03 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/81368 Chatrchyan, S., V. Khachatryan, A. M. Sirunyan, et al. 2013 Measurement of Associated Production of Vector Bosons and Top Quark-antiquark Pairs in Pp Collisions at Sqrt[s]=7 TeV. Physical Review Letters 110(17). https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 en_US http://dx.doi.org/10.1103/PhysRevLett.110.172002 Physical Review Letters Creative Commons Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ application/pdf American Physical Society APS |
| spellingShingle | Apyan, Aram Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Dutta, Valentina Gomez-Ceballos, Guillelmo Goncharov, Maxim Kim, Y. Klute, Markus Krajczar, Krisztian F. Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Rudolph, Matthew Scott Stephans, George S. F. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wolf, Roger Wyslouch, Boleslaw Yang, Mingming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Bauer, Gerry P Wyslouch, Victoria Levin, Andrew Michael Luckey Jr, P David Ma, Teng Roland, Christof E Roland, Gunther M Stoeckli, Fabian Sumorok, Konstanty C Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at sqrt[s]=7 TeV |
| title | Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at sqrt[s]=7 TeV |
| title_full | Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at sqrt[s]=7 TeV |
| title_fullStr | Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at sqrt[s]=7 TeV |
| title_full_unstemmed | Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at sqrt[s]=7 TeV |
| title_short | Measurement of associated production of vector bosons and top quark-antiquark pairs in pp collisions at sqrt[s]=7 TeV |
| title_sort | measurement of associated production of vector bosons and top quark antiquark pairs in pp collisions at sqrt s 7 tev |
| url | http://hdl.handle.net/1721.1/81368 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 |
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