Search for direct stau production in events with two hadronic τ-leptons in √<i>s</i>=13 TeV <i>pp</i> collisions with the ATLAS detector



Aad, G, Abbott, B, Abbott, DC, Abud, A Abed, Abeling, K, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2909 more authors) (2020) Search for direct stau production in events with two hadronic τ-leptons in √<i>s</i>=13 TeV <i>pp</i> collisions with the ATLAS detector. PHYSICAL REVIEW D, 101 (3). 032009-.

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Abstract

A search for the direct production of the supersymmetric partners of $\tau$-leptons (staus) in final states with two hadronically decaying $\tau$-leptons is presented. The analysis uses a dataset of $pp$ collisions corresponding to an integrated luminosity of $139$ fb$^{-1}$, recorded with the ATLAS detector at the Large Hadron Collider at a center-of-mass energy of 13 TeV. No significant deviation from the expected Standard Model background is observed. Limits are derived in scenarios of direct production of stau pairs with each stau decaying into the stable lightest neutralino and one $\tau$-lepton in simplified models where the two stau mass eigenstates are degenerate. Stau masses from 120 GeV to 390 GeV are excluded at 95% confidence level for a massless lightest neutralino.

Item Type: Article
Additional Information: 43 pages, author list starting at 27, 7 tables, 7 figures, published version in PRD. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2018-04
Uncontrolled Keywords: hep-ex, hep-ex
Depositing User: Symplectic Admin
Date Deposited: 06 Apr 2020 10:31
Last Modified: 11 Oct 2023 20:12
DOI: 10.1103/PhysRevD.101.032009
Open Access URL: https://journals.aps.org/prd/abstract/10.1103/Phys...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3082093