Hiding in the Shadow of the Upsilon: Ditaus from a Light Pseudoscalar

Matthew R Buckley, David Shih, Isaac R Wang

The CMS collaboration has reported a measurement of $\hat{I}\yen$ decays to ditaus using $61.9{\mathrm{fb}}^{-1}$ of scouting data. If interpreted as the decay of $\hat{I}\yen (1S,2S,3S)$, the measured d…