Search for anomalous t[bar over t] production in the highly-boosted all-hadronic final state
A search is presented for a massive particle, generically referred to as a Z′, decaying into a t[bar over t] pair. The search focuses on Z[superscript ′] resonances that are sufficiently massive to produce highly Lorentz-boosted top quarks, which yield collimated decay products that are partially or...
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| Format: | Article |
| Language: | en_US |
| Published: |
Springer-Verlag
2014
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| Online Access: | http://hdl.handle.net/1721.1/86207 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/0000-0002-6047-4211 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0002-0869-5631 |
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| author | Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Kim, Y. Klute, Markus Li, W. Ma, Teng Nahn, Steven Paus, Cristoph M. E. Ralph, Duncan Kelley Roland, Cristof E. Rudoph, M. Stephans, George S. F. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wyslouch, Boleslaw Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Paus, Christoph M. E. Lee, Yen-Jie Luckey Jr, P David Roland, Gunther M Sumorok, Konstanty C Wolf, Roger Xie, Si Roland, Christof E Bauer, Gerry P Dutta, Valentina Stoeckli, Fabian Yang, Mingming Rudolph, Matthew Scott |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Kim, Y. Klute, Markus Li, W. Ma, Teng Nahn, Steven Paus, Cristoph M. E. Ralph, Duncan Kelley Roland, Cristof E. Rudoph, M. Stephans, George S. F. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wyslouch, Boleslaw Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Paus, Christoph M. E. Lee, Yen-Jie Luckey Jr, P David Roland, Gunther M Sumorok, Konstanty C Wolf, Roger Xie, Si Roland, Christof E Bauer, Gerry P Dutta, Valentina Stoeckli, Fabian Yang, Mingming Rudolph, Matthew Scott |
| author_sort | Bendavid, Joshua L. |
| collection | MIT |
| description | A search is presented for a massive particle, generically referred to as a Z′, decaying into a t[bar over t] pair. The search focuses on Z[superscript ′] resonances that are sufficiently massive to produce highly Lorentz-boosted top quarks, which yield collimated decay products that are partially or fully merged into single jets. The analysis uses new methods to analyze jet substructure, providing suppression of the non-top multijet backgrounds. The analysis is based on a data sample of proton-proton collisions at a center-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 5 fb[superscript −1]. Upper limits in the range of 1 pb are set on the product of the production cross section and branching fraction for a topcolor Z′ modeled for several widths, as well as for a Randall-Sundrum Kaluza-Klein gluon. In addition, the result contrain any enhancement in t[bar over t] production beyond expectations of the standard mode for tt invariant mass larger than 1 TeV/c [superscript 2]. |
| first_indexed | 2024-09-23T16:19:14Z |
| format | Article |
| id | mit-1721.1/86207 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:19:14Z |
| publishDate | 2014 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/862072023-02-26T08:06:00Z Search for anomalous t[bar over t] production in the highly-boosted all-hadronic final state Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Kim, Y. Klute, Markus Li, W. Ma, Teng Nahn, Steven Paus, Cristoph M. E. Ralph, Duncan Kelley Roland, Cristof E. Rudoph, M. Stephans, George S. F. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wyslouch, Boleslaw Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Paus, Christoph M. E. Lee, Yen-Jie Luckey Jr, P David Roland, Gunther M Sumorok, Konstanty C Wolf, Roger Xie, Si Roland, Christof E Bauer, Gerry P Dutta, Valentina Stoeckli, Fabian Yang, Mingming Rudolph, Matthew Scott Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Massachusetts Institute of Technology. School of Science Bauer, Gerry P. Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Dutta, V. Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Kim, Y. Klute, Markus Lee, Y.-J. Li, W. Luckey, P. David, Jr. Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E. Roland, Gunther M. Rudolph, M. Stephans, George S. F. Stockli, Fabian Sumorok, Konstanty C. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wolf, R. Wyslouch, Boleslaw Xie, S. Yang, M. Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco A search is presented for a massive particle, generically referred to as a Z′, decaying into a t[bar over t] pair. The search focuses on Z[superscript ′] resonances that are sufficiently massive to produce highly Lorentz-boosted top quarks, which yield collimated decay products that are partially or fully merged into single jets. The analysis uses new methods to analyze jet substructure, providing suppression of the non-top multijet backgrounds. The analysis is based on a data sample of proton-proton collisions at a center-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 5 fb[superscript −1]. Upper limits in the range of 1 pb are set on the product of the production cross section and branching fraction for a topcolor Z′ modeled for several widths, as well as for a Randall-Sundrum Kaluza-Klein gluon. In addition, the result contrain any enhancement in t[bar over t] production beyond expectations of the standard mode for tt invariant mass larger than 1 TeV/c [superscript 2]. United States. Dept. of Energy National Science Foundation (U.S.) 2014-04-17T19:12:00Z 2014-04-17T19:12:00Z 2012-09 2012-07 Article http://purl.org/eprint/type/JournalArticle 1029-8479 1126-6708 http://hdl.handle.net/1721.1/86207 Chatrchyan, S., V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Search for Anomalous t[bar over t] Production in the Highly-Boosted All-Hadronic Final State.” J. High Energ. Phys. 2012, no. 9 (September 2012). © CERN, for the benefit of the CMS collaboration 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/0000-0002-6047-4211 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0002-0869-5631 en_US http://dx.doi.org/10.1007/jhep09(2012)029 Journal of High Energy Physics Creative Commons Attribution http://creativecommons.org/licenses/by/3.0/ application/pdf Springer-Verlag Springer |
| spellingShingle | Bendavid, Joshua L. Busza, Wit Butz, Erik M. Cali, Ivan Amos Chan, M. Gomez-Ceballos, Guillelmo Goncharov, Maxim Hahn, Kristian Allan Kim, Y. Klute, Markus Li, W. Ma, Teng Nahn, Steven Paus, Cristoph M. E. Ralph, Duncan Kelley Roland, Cristof E. Rudoph, M. Stephans, George S. F. Sung, Kevin Kai Hong Velicanu, Dragos Alexandru Wenger, Edward Allen Wyslouch, Boleslaw Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Paus, Christoph M. E. Lee, Yen-Jie Luckey Jr, P David Roland, Gunther M Sumorok, Konstanty C Wolf, Roger Xie, Si Roland, Christof E Bauer, Gerry P Dutta, Valentina Stoeckli, Fabian Yang, Mingming Rudolph, Matthew Scott Search for anomalous t[bar over t] production in the highly-boosted all-hadronic final state |
| title | Search for anomalous t[bar over t] production in the highly-boosted all-hadronic final state |
| title_full | Search for anomalous t[bar over t] production in the highly-boosted all-hadronic final state |
| title_fullStr | Search for anomalous t[bar over t] production in the highly-boosted all-hadronic final state |
| title_full_unstemmed | Search for anomalous t[bar over t] production in the highly-boosted all-hadronic final state |
| title_short | Search for anomalous t[bar over t] production in the highly-boosted all-hadronic final state |
| title_sort | search for anomalous t bar over t production in the highly boosted all hadronic final state |
| url | http://hdl.handle.net/1721.1/86207 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/0000-0002-6047-4211 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0002-0869-5631 |
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