Dalitz Decay $H\to f\bar{f}\gamma$ as a Background for $H\to \gamma \gamma$

Abstract

The Dalitz decay $H\to f\bar{f}\gamma$ 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 $H\to \gamma \gamma$ decays. Using the ATLAS cuts and the full Dalitz decay amplitude, we estimate this fraction to be 7.06%.

Comments: 3 pages, 1 figure, 2 tables