Prospects for observing the $${\eta }_{t}$$ $${\rightarrow }$$ $$W^{+}W^{-}$$ decay at the HL-LHC
Year: 2026
Type: article
Abstract: Motivated by the recent observation of the pseudoscalar toponium $${\eta }_{t}$$ η t at the LHC and by the ongoing interest in its properties, we phenomenologically investigate the $${\eta }_{t}$$ η t $${\rightarrow }$$ → $$W^{+}W^{-}$$ W + W - process, one of the characteristic decays of toponium $${\eta }_{t}$$ η t . The branching ratio for the $${\eta }_{t}$$ η t $${\rightarrow }$$ → $$W^{+}W^{-}$$ W + W - decay is estimated with two scenarios of the decay constant $$f_{{\eta }_{t}}$$ f η t . It is found that tens of dilepton events from the cascade decays, $${\eta }_{t}$$ η t $${\rightarrow }$$ → $$W^{+}W^{-}$$ W + W - $${\rightarrow }$$ → $${\ell }^{-}\bar{\nu }_{\ell }{\ell }^{{\prime }+}{\nu }_{{\ell }^{\prime }}$$ ℓ - ν ¯ ℓ ℓ ′ + ν ℓ ′ with
Source: The European Physical Journal C
Authors: Yueling Yang, Bingbing Yang, Junfeng Sun
Institution: Henan Normal University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Awards: G3112334756, G7547364445, G8105436788
OpenAlex ID: W7171427205