A search for top squarks with R-parity-violating decays to all-hadronic final states with the ATLAS detector in √s=8 TeV proton-proton collisions

Barton, Adam Edward and Beattie, Michael and Borissov, Guennadi and Bouhova-Thacker, Evelina Vassileva and Cheatham, Sue and Dearnaley, William and Fox, Harald and Grimm, Kathryn Ann Tschann and Henderson, Robert Charles William and Hughes, Gareth and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin Eamonn and Love, Peter Allan and Muenstermann, Daniel Matthias Alfred and Skinner, Malcolm and Smizanska, Maria and Walder, James William and Wharton, Andy (2016) A search for top squarks with R-parity-violating decays to all-hadronic final states with the ATLAS detector in √s=8 TeV proton-proton collisions. Journal of High Energy Physics (6). ISSN 1029-8479

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Abstract

A search for the pair production of top squarks, each with R-parity-violating decays into two Standard Model quarks, is performed using 17.4 fb−1 of √s=8 TeV proton-proton collision data recorded by the ATLAS experiment at the LHC. Each top squark is assumed to decay to ab- and an s-quark, leading to four quarks in the final state. Background discrimination is achieved with the use of b-tagging and selections on the mass and substructure of large-radius jets, providing sensitivity to top squark masses as low as 100 GeV. No evidence of an excess beyond the Standard Model background prediction is observed and top squarks decaying to b¯s¯ are excluded for top squark masses in the range 100 ≤mt¯≤ 315 GeV at 95% confidence level.

Item Type: Journal Article
Journal or Publication Title: Journal of High Energy Physics
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 80844
Deposited By: ep_importer_pure
Deposited On: 09 Aug 2016 14:38
Refereed?: Yes
Published?: Published
Last Modified: 15 Oct 2019 03:49
URI: https://eprints.lancs.ac.uk/id/eprint/80844

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