Revisiting $HW\rightarrowγγ\ellν$

A new particle of mass around 125 GeV is known to have loop induced couplings to $gg$ and $γγ$. More specific to the Higgs interpretation are tree level couplings to $W$ and $Z$. A small but clean signal of the Higgs coupling to $W$ arises from associated production of a Higgs, with $H\rightarrowγγ$. We consider this signal in light of a large NLO enhancement of the irreducible background.

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