Journal article
Search for direct top squark pair production in final states with two leptons in √ s = 13 TeV pp collisions with the ATLAS detector
- Abstract:
- The results of a search for direct pair production of top squarks in events with two opposite-charge leptons (electrons or muons) are reported, using 36.1 fb^-1 of integrated luminosity from proton–proton collisions at √s = 13 TeV collected by the ATLAS detector at the Large Hadron Collider. To cover a range of mass differences between the top squark t˜ and lighter supersymmetric particles, four possible decay modes of the top squark are targeted with dedicated selections: the decay t˜ → b χ˜±1 into a b-quark and the lightest chargino with χ˜±1 → Wχ˜01, the decay t˜ → t χ˜01 into an on-shell top quark and the lightest neutralino, the three-body decay t˜ → bW χ˜01 and the four-body decay t˜ → b`𝓁vχ˜01 . No significant excess of events is observed above the Standard Model background for any selection, and limits on top squarks are set as a function of the t˜ and χ˜01 masses. The results exclude at 95% confidence level χ˜01 masses up to about 720 GeV, extending the exclusion region of supersymmetric parameter space covered by previous searches.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 2.3MB, Terms of use)
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- Publisher copy:
- 10.1140/epjc/s10052-017-5445-x
Authors
- Publisher:
- Springer
- Journal:
- European Physical Journal C More from this journal
- Volume:
- 77
- Pages:
- 898
- Publication date:
- 2017-12-22
- Acceptance date:
- 2017-12-04
- DOI:
- EISSN:
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1434-6052
- ISSN:
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1434-6044
- Pubs id:
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pubs:807787
- UUID:
-
uuid:e2773893-e382-4ced-9098-9354754eedbb
- Local pid:
-
pubs:807787
- Source identifiers:
-
807787
- Deposit date:
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2017-12-04
Terms of use
- Copyright holder:
- CERN
- Copyright date:
- 2017
- Notes:
- © CERN for the benefit of the ATLAS collaboration 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
- Licence:
- CC Attribution (CC BY)
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