Search for W′ → tb → qqbb Decays in pp Collisions at √s = 8 TeV with the ATLAS Detector
A search for a massive W′ gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The dataset was taken at a centre-of-mass energy of √s = 8 TeV and corresponds to 20.3 fb[superscript -1] of integrated luminosity. This analysis is done...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Article |
| Published: |
Springer/Societa Italiana di Fisica
2015
|
| Online Access: | http://hdl.handle.net/1721.1/100030 https://orcid.org/0000-0002-7586-7253 |
| _version_ | 1811089075582533632 |
|---|---|
| author | Taylor, Frank E. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. |
| author_sort | Taylor, Frank E. |
| collection | MIT |
| description | A search for a massive W′ gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The dataset was taken at a centre-of-mass energy of √s = 8 TeV and corresponds to 20.3 fb[superscript -1] of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass W′ bosons in the range 1.5–3.0 TeV. b-tagging is used to identify jets originating from b-quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95% confidence level are set on the W′ → tb cross section times branching ratio ranging from 0.16 pb to 0.33 pb for left-handed W′ bosons, and ranging from 0.10 pb to 0.21 pb for W′ bosons with purely right-handed couplings. Upper limits at 95 % confidence level are set on the W′-boson coupling to tb as a function of the W′ mass using an effective field theory approach, which is independent of details of particular models predicting a W′ boson. |
| first_indexed | 2024-09-23T14:13:23Z |
| format | Article |
| id | mit-1721.1/100030 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T14:13:23Z |
| publishDate | 2015 |
| publisher | Springer/Societa Italiana di Fisica |
| record_format | dspace |
| spelling | mit-1721.1/1000302022-09-28T19:19:51Z Search for W′ → tb → qqbb Decays in pp Collisions at √s = 8 TeV with the ATLAS Detector Taylor, Frank E. Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. A search for a massive W′ gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The dataset was taken at a centre-of-mass energy of √s = 8 TeV and corresponds to 20.3 fb[superscript -1] of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass W′ bosons in the range 1.5–3.0 TeV. b-tagging is used to identify jets originating from b-quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95% confidence level are set on the W′ → tb cross section times branching ratio ranging from 0.16 pb to 0.33 pb for left-handed W′ bosons, and ranging from 0.10 pb to 0.21 pb for W′ bosons with purely right-handed couplings. Upper limits at 95 % confidence level are set on the W′-boson coupling to tb as a function of the W′ mass using an effective field theory approach, which is independent of details of particular models predicting a W′ boson. United States. Dept. of Energy National Science Foundation (U.S.) Brookhaven National Laboratory 2015-11-24T16:12:09Z 2015-11-24T16:12:09Z 2015-04 2014-08 2015-11-05T20:26:13Z Article http://purl.org/eprint/type/JournalArticle 1434-6044 1434-6052 http://hdl.handle.net/1721.1/100030 Aad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, B. Abi, et al. “Search for W′ → tb → qqbb Decays in pp Collisions at √s = 8 TeV with the ATLAS Detector.” The European Physical Journal C 75, no. 4 (April 2015). © 2015 CERN for the benefit of the ATLAS collaboration https://orcid.org/0000-0002-7586-7253 http://dx.doi.org/10.1140/epjc/s10052-015-3372-2 The European Physical Journal C Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ CERN for the benefit of the ATLAS collaboration application/pdf Springer/Societa Italiana di Fisica TopicHub SCOAP3 |
| spellingShingle | Taylor, Frank E. Search for W′ → tb → qqbb Decays in pp Collisions at √s = 8 TeV with the ATLAS Detector |
| title | Search for W′ → tb → qqbb Decays in pp Collisions at √s = 8 TeV with the ATLAS Detector |
| title_full | Search for W′ → tb → qqbb Decays in pp Collisions at √s = 8 TeV with the ATLAS Detector |
| title_fullStr | Search for W′ → tb → qqbb Decays in pp Collisions at √s = 8 TeV with the ATLAS Detector |
| title_full_unstemmed | Search for W′ → tb → qqbb Decays in pp Collisions at √s = 8 TeV with the ATLAS Detector |
| title_short | Search for W′ → tb → qqbb Decays in pp Collisions at √s = 8 TeV with the ATLAS Detector |
| title_sort | search for w tb qqbb decays in pp collisions at √s 8 tev with the atlas detector |
| url | http://hdl.handle.net/1721.1/100030 https://orcid.org/0000-0002-7586-7253 |
| work_keys_str_mv | AT taylorfranke searchforwtbqqbbdecaysinppcollisionsats8tevwiththeatlasdetector |