Search for the direct production of charginos and neutralinos in final states with tau leptons in √s=13 TeV pp collisions with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H, Abreu, H
et al (show 2872 more authors) (2018) Search for the direct production of charginos and neutralinos in final states with tau leptons in √s=13 TeV pp collisions with the ATLAS detector EUROPEAN PHYSICAL JOURNAL C, 78 (2). 154-. ISSN 1434-6044, 1434-6052

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Abstract

A search for the direct production of charginos and neutralinos in final states with at least two hadronically decaying tau leptons is presented. The analysis uses a dataset of pp collisions corresponding to an integrated luminosity of 36.1 fb- 1, recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 13 TeV. No significant deviation from the expected Standard Model background is observed. Limits are derived in scenarios of [InlineMediaObject not available: see fulltext.] pair production and of [InlineMediaObject not available: see fulltext.] and [InlineMediaObject not available: see fulltext.] production in simplified models where the neutralinos and charginos decay solely via intermediate left-handed staus and tau sneutrinos, and the mass of the τ~ <inf>L</inf> state is set to be halfway between the masses of the [InlineMediaObject not available: see fulltext.] and the [InlineMediaObject not available: see fulltext.]. Chargino masses up to 630 GeV are excluded at 95% confidence level in the scenario of direct production of [InlineMediaObject not available: see fulltext.] for a massless [InlineMediaObject not available: see fulltext.]. Common [InlineMediaObject not available: see fulltext.] and [InlineMediaObject not available: see fulltext.] masses up to 760 GeV are excluded in the case of production of [InlineMediaObject not available: see fulltext.] and [InlineMediaObject not available: see fulltext.] assuming a massless [InlineMediaObject not available: see fulltext.]. Exclusion limits for additional benchmark scenarios with large and small mass-splitting between the [InlineMediaObject not available: see fulltext.] and the [InlineMediaObject not available: see fulltext.] are also studied by varying the τ~ <inf>L</inf> mass between the masses of the [InlineMediaObject not available: see fulltext.] and the [InlineMediaObject not available: see fulltext.].

Item Type: Article
Additional Information: 47 pages in total, author list starting page 31, 8 figures, 9 tables, published in EPJC, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2016-23/
Uncontrolled Keywords: ATLAS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 26 Mar 2018 06:26
Last Modified: 16 Jun 2026 11:31
DOI: 10.1140/epjc/s10052-018-5583-9
Related Websites:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3019454
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