Search for light top squark pair production in final states with leptons and b-jets with the ATLAS detector in √s = 7 TeV proton–proton collisions
The results of a search for pair production of light top squarks are presented, using 4.7 fb[superscript −1] √s = 7 TeV proton–proton collisions collected with the ATLAS detector at the Large Hadron Collider. This search targets top squarks with masses similar to, or lighter than, the top quark mass...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2014
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| Online Access: | http://hdl.handle.net/1721.1/91923 https://orcid.org/0000-0002-7586-7253 |
| _version_ | 1826216315671543808 |
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| 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 | The results of a search for pair production of light top squarks are presented, using 4.7 fb[superscript −1] √s = 7 TeV proton–proton collisions collected with the ATLAS detector at the Large Hadron Collider. This search targets top squarks with masses similar to, or lighter than, the top quark mass. Final states containing exclusively one or two leptons (e,μ), large missing transverse momentum, light-flavour jets and b-jets are used to reconstruct the top squark pair system. Event-based mass scale variables are used to separate the signal from a large t[bar over t] background. No excess over the Standard Model expectations is found. The results are interpreted in the framework of the Minimal Supersymmetric Standard Model, assuming the top squark decays exclusively to a chargino and a b-quark, while requiring different mass relationships between the Supersymmetric particles in the decay chain. Light top squarks with masses between 123–167 GeV are excluded for neutralino masses around 55 GeV. |
| first_indexed | 2024-09-23T16:45:27Z |
| format | Article |
| id | mit-1721.1/91923 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:45:27Z |
| publishDate | 2014 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/919232022-09-29T21:18:55Z Search for light top squark pair production in final states with leptons and b-jets with the ATLAS detector in √s = 7 TeV proton–proton collisions Taylor, Frank E. Massachusetts Institute of Technology. Department of Physics Taylor, Frank E. The results of a search for pair production of light top squarks are presented, using 4.7 fb[superscript −1] √s = 7 TeV proton–proton collisions collected with the ATLAS detector at the Large Hadron Collider. This search targets top squarks with masses similar to, or lighter than, the top quark mass. Final states containing exclusively one or two leptons (e,μ), large missing transverse momentum, light-flavour jets and b-jets are used to reconstruct the top squark pair system. Event-based mass scale variables are used to separate the signal from a large t[bar over t] background. No excess over the Standard Model expectations is found. The results are interpreted in the framework of the Minimal Supersymmetric Standard Model, assuming the top squark decays exclusively to a chargino and a b-quark, while requiring different mass relationships between the Supersymmetric particles in the decay chain. Light top squarks with masses between 123–167 GeV are excluded for neutralino masses around 55 GeV. European Organization for Nuclear Research United States. Dept. of Energy National Science Foundation (U.S.) Brookhaven National Laboratory 2014-11-26T15:47:16Z 2014-11-26T15:47:16Z 2013-01 2012-12 Article http://purl.org/eprint/type/JournalArticle 03702693 http://hdl.handle.net/1721.1/91923 Aad, G., T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, A.A. Abdelalim, O. Abdinov, et al. “Search for Light Top Squark Pair Production in Final States with Leptons and b-Jets with the ATLAS Detector in √s = 7 TeV Proton–proton Collisions.” Physics Letters B 720, no. 1–3 (March 2013): 13–31. © 2013 CERN https://orcid.org/0000-0002-7586-7253 en_US http://dx.doi.org/10.1016/j.physletb.2013.01.049 Physics Letters B Creative Commons Attribution http://creativecommons.org/licenses/by/3.0/ application/pdf Elsevier Elsevier |
| spellingShingle | Taylor, Frank E. Search for light top squark pair production in final states with leptons and b-jets with the ATLAS detector in √s = 7 TeV proton–proton collisions |
| title | Search for light top squark pair production in final states with leptons and b-jets with the ATLAS detector in √s = 7 TeV proton–proton collisions |
| title_full | Search for light top squark pair production in final states with leptons and b-jets with the ATLAS detector in √s = 7 TeV proton–proton collisions |
| title_fullStr | Search for light top squark pair production in final states with leptons and b-jets with the ATLAS detector in √s = 7 TeV proton–proton collisions |
| title_full_unstemmed | Search for light top squark pair production in final states with leptons and b-jets with the ATLAS detector in √s = 7 TeV proton–proton collisions |
| title_short | Search for light top squark pair production in final states with leptons and b-jets with the ATLAS detector in √s = 7 TeV proton–proton collisions |
| title_sort | search for light top squark pair production in final states with leptons and b jets with the atlas detector in √s 7 tev proton proton collisions |
| url | http://hdl.handle.net/1721.1/91923 https://orcid.org/0000-0002-7586-7253 |
| work_keys_str_mv | AT taylorfranke searchforlighttopsquarkpairproductioninfinalstateswithleptonsandbjetswiththeatlasdetectorins7tevprotonprotoncollisions |