Search for chargino–neutralino pair production in final states with three leptons and missing transverse momentum in $$\sqrt{s} = 13$$ TeV pp collisions with the ATLAS detector

Journal article

Recently, the CMS collaboration has reported a di-tau excess with a local significance of 2.6–3.1$\sigma$ where the invariant mass is $m_{\tau\tau}=95–100$ GeV. This excess can be interpreted as a light scalar boson that couples to the third generation fermions, particularly top and τ. Based on the simplest model that can account for the CMS di-tau excess, we evaluate experimental sensitivities to the additional light resonance, using the results reported by the ATLAS collaboration. We see that a search for the top-quark associated production of the SM Higgs boson that decays into $\tau\bar{\tau}$ sets a strong model-independent limit. We also find that the CP-even scalar interpretation of the light resonance is excluded by the ATLAS results, while the CP-odd interpretation is not

Authors: Aad, G; Abbott, B; Abbott, DC; Abed Abud, A; Abeling, K

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: SpringerOpen
• Journal: The European Physical Journal C
• Volume: 81
• Issue: 12
• Pages: 1118
• Article number: 1118
• Publication date: 2021-12-20
• DOI: 10.1140/epjc/s10052-021-09749-7
• EISSN: 1434-6052
• ISSN: 1434-6044
• Language: English
• Keywords: Electron; Chargino; Detector; Neutralino; Particle physics; Supersymmetry; Lepton; Large Hadron Collider; Production (economics); Engineering; Nuclear physics; Physics; Atlas detector; Pair production; Atlas (anatomy); Transverse plane