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%.

3 pages, 1 figure, 2 tables

References in corpus (6)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Higgs Boson Production and Decay: Dalitz Sector
• Calculation of the decay ${\bm H\bm\to\bm e\bar{\bm e}\bm\ga}$
• Internal conversions in Higgs decays to two photons
• Comparison of $H\to \ell \bar{\ell }\gamma$ and $H\to \gamma Z,Z\to \ell \bar{\ell }$ including the ATLAS cuts

Cited by in corpus (2)

• Angular distribution and forward-backward asymmetry of the Higgs-boson decay to photon and lepton pair
• Evidence for Higgs boson decays to a low-mass dilepton system and a photon in pp collisions at $\sqrt{s}=$ 13 TeV with the ATLAS detector