Search for electroweak production of supersymmetric particles in final states with two τ-leptons in s $$ \sqrt{s} $$ = 13 TeV pp collisions with the ATLAS detector
Journal Article
2024-05-13
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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
−
$$ {\overset{\sim }{\chi}}_1^{+}{\overset{\sim }{\chi}}_1^{-} $$
, chargino masses are excluded up to 970 GeV, while
χ
~
1
±
$$ {\overset{\sim }{\chi}}_1^{\pm } $$
and
χ
~
2
0
$$ {\overset{\sim }{\chi}}_2^0 $$
masses up to 1160 GeV (330 GeV) are excluded for
χ
~
1
±
χ
~
2
0
/
χ
~
1
+
χ
~
1
−
$$ {\overset{\sim }{\chi}}_1^{\pm }{\overset{\sim }{\chi}}_2^0/{\overset{\sim }{\chi}}_1^{+}{\overset{\sim }{\chi}}_1^{-} $$
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
$$ {\overset{\sim }{\tau}}_{L,R} $$
scenarios and up to 425 GeV for
τ
~
L
$$ {\overset{\sim }{\tau}}_L $$
-only scenarios. Sensitivity to
τ
~
R
$$ {\overset{\sim }{\tau}}_R $$
-only scenarios from the ATLAS experiment is presented here for the first time, with
τ
~
R
$$ {\overset{\sim }{\tau}}_R $$
masses excluded up to 350 GeV.
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Journal of High Energy Physics. 2024 May 13;2024(5):150