Search for low-mass resonances decaying to τ τ and measurement of the Y → τ τ decay in proton-proton collisions at √S = 13.6 TeV

Key Points

• This research aims to search for low-mass resonances decaying to tau lepton pairs and to measure the Υ → τ +τ − decay.
• Analyzed proton-proton collisions at √s = 13.6 TeV
• Utilized a high-rate data stream and a novel low-pT hadronic tau reconstruction algorithm
• Data from the CMS experiment covering 61.9 fb−1 recorded in 2022–2023.
• No significant excess observed for low-mass resonances in the range of 20–60 GeV.
• The Υ → τ +τ − decay process has a measured cross section of σ = 3.5 ± 0.71(stat) ± 0.71(syst) nb.