Dalitz Decay $H\to f\bar{f}{\hat{I}}^3$ as a Background for $H\to {\hat{I}}^3{\hat{I}}^3$

Abstract

The Dalitz decay $H\to f\bar{f}{\hat{I}}^3$ is calculated for very small $f\bar{f}$ invariant masses where the $f\bar{f}$ pair could be mistaken for a photon in analysis of $H\to {\hat{I}}^3{\hat{I}}^3$ decays. Using the ATLAS cuts and the full Dalitz decay amplitude, we estimate this fraction to be 7.06%.

3 pages, 1 figure, 2 tables