Dalitz Decay $H\to\,f\bar{f}γ$ as a Background for $H\toγ\,γ$

preprint2014arXivOpen access

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

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Dalitz Decay $H\to\,f\bar{f}γ$ as a Background for $H\toγ\,γ$

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Dalitz Decay H→ ffˉγH\to\,f\bar{f}γH→ffˉ​γ as a Background for H→γ γH\toγ\,γH→γγ

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Dalitz Decay $H\to\,f\bar{f}γ$ as a Background for $H\toγ\,γ$