Speaker
Description
A search for HH or $X\to SH$ production in final states with one or two light leptons and a pair of $\tau$-leptons is presented. The search uses a $pp$ collision data sample with an integrated luminosity of 140 fb$^{-1}$, recorded at a center-of-mass energy of $\sqrt{s} = 13$ TeV, with the ATLAS detector at the Large Hadron Collider. The search selects events with two hadronically decaying $\tau$-lepton candidates from $H\to \tau^+\tau^-$ decays and one or two light leptons ($\ell=e,\,\mu$) from $S(H)\to VV$ ($V = W,\,Z$) decays while the remaining $V$ boson decays hadronically or neutrinos. A multivariate discriminant based on event kinematics is used to separate the signal from the background. No excess is observed beyond the expected SM background and 95\% confidence level upper limits will be reported.
| Alternate track | 03. Beyond the Standard Model |
|---|---|
| I read the instructions above | Yes |
