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arXiv · 2004.06122

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

Fady Bishara·Philipp Englert·Christophe Grojean·Marc Montull·Giuliano Panico·Alejo N. Rossia
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Abstract

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 $\mathcal{O}_{\varphi q}^{(3)}$, $\mathcal{O}_{\varphi {W}}$, and $\mathcal{O}_{\varphi \widetilde {W}}$ 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 $\mathcal{O}_{\varphi \widetilde {W}}$. However, the bounds on $\mathcal{O}_{\varphi {W}}$ and $\mathcal{O}_{\varphi \widetilde {W}}$ 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.

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Fady Bishara, Philipp Englert, Christophe Grojean, Marc Montull, Giuliano Panico, Alejo N. Rossia. 2020-04-13. A New Precision Process at FCC-hh: the diphoton leptonic Wh channel. https://doi.org/10.1007/jhep07(2020)075

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