Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/115265
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Type: | Journal article |
Title: | Search for direct top squark pair production in final states with two leptons in √s = 13 TeV pp collisions with the ATLAS detector |
Other Titles: | Search for direct top squark pair production in final states with two leptons in root s = 13 TeV pp collisions with the ATLAS detector |
Author: | Aaboud, M. Aad, G. Abbott, B. Abdinov, O. Abeloos, B. Abidi, S. AbouZeid, O. Abraham, N. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, B. Adachi, S. Adamczyk, L. Adelman, J. Adersberger, M. Adye, T. Affolder, A. Afik, Y. et al. |
Citation: | European Physical Journal C: Particles and Fields, 2017; 77(12):898-1-898-41 |
Publisher: | Springer |
Issue Date: | 2017 |
ISSN: | 1434-6044 1434-6052 |
Statement of Responsibility: | M. Aaboud ... D. Duvnjak ... P. Jackson ... L. Lee ... P. Petridis ... M.J. White ... [et al.] (The ATLAS Collaboration) |
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~→bχ~±1 into a b-quark and the lightest chargino with χ~±1→Wχ~01, the decay t~→tχ~01 into an on-shell top quark and the lightest neutralino, the three-body decay t~→bWχ~01 and the four-body decay t~→bℓνχ~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 t~ masses up to about 720 GeV, extending the exclusion region of supersymmetric parameter space covered by previous searches. |
Keywords: | ATLAS Collaboration |
Rights: | © CERN for the benefit of the ATLAS collaboration 2017. This article is an open access publication. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecomm ons.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. Funded by SCOAP3. |
DOI: | 10.1140/epjc/s10052-017-5445-x |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1140/epjc/s10052-017-5445-x |
Appears in Collections: | Aurora harvest 3 Physics publications |
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hdl_115265.pdf | Published version | 1.69 MB | Adobe PDF | View/Open |
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