학술논문
Search for electroweak production of supersymmetric particles in final states with two τ-leptons in s = 13 TeV pp collisions with the ATLAS detector
Document Type
Original Paper
Author
Source
Journal of High Energy Physics. 2024(5)
Subject
Language
English
ISSN
1029-8479
Abstract
Abstract: Three searches for the direct production of τ-sleptons or charginos and neutralinos in final 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 significant deviation from the expected Standard Model background is observed and supersymmetric particle mass limits at 95% confidence level are obtained in simplified models. For direct production of χ~1+χ~1−χ~1±χ~20χ~1±χ~20/χ~1+χ~1−τ~L,Rτ~Lτ~Rτ~R, chargino masses are excluded up to 970 GeV, while χ~1+χ~1−χ~1±χ~20χ~1±χ~20/χ~1+χ~1−τ~L,Rτ~Lτ~Rτ~R and χ~1+χ~1−χ~1±χ~20χ~1±χ~20/χ~1+χ~1−τ~L,Rτ~Lτ~Rτ~R masses up to 1160 GeV (330 GeV) are excluded for χ~1+χ~1−χ~1±χ~20χ~1±χ~20/χ~1+χ~1−τ~L,Rτ~Lτ~Rτ~R production with subsequent decays via τ-sleptons (W and h bosons). Masses of τ-sleptons up to 500 GeV are excluded for mass degenerate χ~1+χ~1−χ~1±χ~20χ~1±χ~20/χ~1+χ~1−τ~L,Rτ~Lτ~Rτ~R scenarios and up to 425 GeV for χ~1+χ~1−χ~1±χ~20χ~1±χ~20/χ~1+χ~1−τ~L,Rτ~Lτ~Rτ~R-only scenarios. Sensitivity to χ~1+χ~1−χ~1±χ~20χ~1±χ~20/χ~1+χ~1−τ~L,Rτ~Lτ~Rτ~R-only scenarios from the ATLAS experiment is presented here for the first time, with χ~1+χ~1−χ~1±χ~20χ~1±χ~20/χ~1+χ~1−τ~L,Rτ~Lτ~Rτ~R masses excluded up to 350 GeV.