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
Parallel Talk Higgs Higgs II


Alejo Rossia (Deutsches Elektronen-Synchrotron DESY)


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)

Presentation Materials