# Phenomenology 2020 Symposium

4-6 May 2020
University of Pittsburgh
US/Eastern timezone

## A New Precision Process at FCC-hh: the diphoton leptonic Wh channel

5 May 2020, 15:15
15m
Parallel Talk Higgs

### Speaker

Alejo Rossia (Deutsches Elektronen-Synchrotron DESY)

### Description

The increase in luminosity and center of mass energy at the FCC-hh will open up new clean channels where BSM contributions are enhanced at high energy. In this paper, we study one such channel, $Wh \to \ell\nu\gamma\gamma$. We estimate the sensitivity to the $\mathcal{O}_{\varphi q}^{(3)}, \, \mathcal{O}_{\varphi\text{W}}$, and $\mathcal{O}_{\varphi\widetilde{\text{W}}}$ SMEFT operators. We find that this channel will be competitive with fully leptonic $WZ$ production in setting bounds on $\mathcal{O}_{\varphi q}^{(3)}$. We also find that the double differential distribution in the $p_T^h$ and the leptonic azimuthal angle can be exploited to enhance the sensitivity to $\mathcal{O}_{\varphi\widetilde{\text{W}}}$.
However, the bounds on $\mathcal{O}_{\varphi\text{W}}$ and $\mathcal{O}_{\varphi\widetilde{\text{W}}}$ we obtain in our analysis, though complementary and more direct, are not competitive with those coming from other measurements such as EDMs and inclusive Higgs measurements.

### Primary authors

Alejo Rossia (Deutsches Elektronen-Synchrotron DESY) Christophe Grojean (DESY (Hamburg) and Humboldt University (Berlin)) Fady Adibsamy Bishara (DESY) Giuliano Panico (University of Florence and INFN Florence) Marc Montull Garcia (Deutsches Elektronen-Synchrotron DESY) Mr Philipp Englert (DESY)