Search for electroweak production of supersymmetric particles in fnal states with two τ -leptons in √s = 13 TeV pp collisions with the ATLAS detector
department or school: Science, Faculty of
department or school: TRIUMF
department or school: Non UBC
department or school: Physics and Astronomy, Department of
data provider: DSpace
identifier citation: Journal of High Energy Physics. 2024 May 13;2024(5):150
rights copyright: The Author(s)
creator: ATLAS Collaboration
issued: 2024-10-24T22:44:29Z
issued: 2024-05-13
description: Three searches for the direct production of τ -sleptons or charginos and neutralinos in fnal states with at least two hadronically decaying τ -leptons are presented. For chargino and neutralino production, decays via intermediate τ -sleptons or W and h bosons are considered. 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 centre-of-mass energy of 13 TeV. No signifcant deviation from the expected Standard Model background is observed and supersymmetric particle mass limits at 95% confdence level are obtained in simplifed models. For direct production of χ˜ + 1 χ˜ − 1 , chargino masses are excluded up to 970 GeV, while χ˜ ± 1 and χ˜ 0 2 masses up to 1160 GeV (330 GeV) are excluded for χ˜ ± 1 χ˜ 0 2 /χ˜ + 1 χ˜ − 1 production with subsequent decays via τ -sleptons (W and h bosons). Masses of τ -sleptons up to 500 GeV are excluded for mass degenerate τ˜L,R scenarios and up to 425 GeV for τ˜L-only scenarios. Sensitivity to τ˜R-only scenarios from the ATLAS experiment is presented here for the frst time, with τ˜R masses excluded up to 350 GeV.
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/89520
note: JHEP05(2024)150PuAlished for SISS Ay SpringerReceived: February 5, 2024Accepted: April 23, 2024Published: May 13, 2024Search for electroweak production of supersymmetricparticles in final states with two τ -leptons in√s = 13TeV pp collisions with the ATLAS detectorThe ATLAS collaborationE-mail: atlas.publications@cern.chAbstract: Three searches for the direct production of τ -sleptons or charginos and neutralinosin final states with at least two hadronically decaying τ -leptons are presented. For chargino andneutralino production, decays via intermediate τ -sleptons or W and h bosons are considered.The analysis uses a dataset of pp collisions corresponding to an integrated luminosity of139 fb−1, recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-massenergy of 13TeV. No significant deviation from the expected Standard Model backgroundis observed and supersymmetric particle mass limits at 95% confidence level are obtainedin simplified models. For direct production of χ˜+1 χ˜−1 , chargino masses are excluded up to970GeV, while χ˜±1 and χ˜02 masses up to 1160GeV (330GeV) are excluded for χ˜±1 χ˜02/χ˜+1 χ˜−1production with subsequent decays via τ -sleptons (W and h bosons). Masses of τ -sleptonsup to 500GeV are excluded for mass degenerate τ˜L,R scenarios and up to 425GeV for τ˜L-onlyscenarios. Sensitivity to τ˜R-only scenarios from the ATLAS experiment is presented herefor the first time, with τ˜R masses excluded up to 350GeV.Keywords: Beyond Standard Model, Electroweak Interaction, Hadron-Hadron Scattering,SupersymmetryArXiv ePrint: 2402.00603Open Access, Copyright CERN,for the benefit of the ATLAS Collaboration.Article funded by SCOAP3.https://doi.org/10.1007/JHEP05(2024)150JHEP05(2024)150Contents1 Introduction 12 ATLAS detector 33 Data and simulated event samples 44 Event reconstruction 55 General analysis strategy and event variables 76 Direct stau production 96.1 Event selection 96.2 Background estimate 107 Intermediate stau channel 157.1 …
has type: Article
is shown at: 10.14288/1.0447106
language: eng
peer review status: Reviewed
provider: Vancouver : University of British Columbia Library
publisher: Springer Berlin Heidelberg
publisher DOI: 10.1007/JHEP05(2024)150
rights: Attribution 4.0 International (CC BY 4.0)
rights URI: http://creativecommons.org/licenses/by/4.0/
scholar level: Faculty
subject: Beyond Standard Model
subject: Electroweak Interaction
subject: Hadron-Hadron Scattering
subject: Supersymmetry
type: Text
identifier URI: http://hdl.handle.net/2429/89520