Nov 7 – 11, 2022
Europe/Rome timezone
There is a live webcast for this event.

No channel left behind: revisiting Vh production at LHC, HL-LHC and FCC-hh

Nov 8, 2022, 11:30 AM
Sala Azzurra (Palazzo della Carovana)

Sala Azzurra

Palazzo della Carovana

Future Colliders Tuesday Session B


Alejo Nahuel Rossia (University of Manchester)


Diboson production processes provide good targets for precision measurements at present and future hadronic colliders. We consider $Vh$ production, focusing on the $h \to b\bar b$ decay channel, whose sizeable cross section makes it easily accessible at the LHC. We perform an improved analysis combining the 0-, 1- and 2-lepton channels with a scale-invariant $b$-tagging algorithm that allows us to exploit events with either a boosted Higgs or resolved $b$-jets. This procedure offers a competitive sensitivity to 4 dimension-6 SMEFT operators, $\mathcal{O}_{\varphi q}^{(3)}$, $\mathcal{O}_{\varphi q}^{(1)}$, $\mathcal{O}_{\varphi u}$ and $\mathcal{O}_{\varphi d}$.

At FCC-hh, the $h \to b \bar b$ decay channel is competitive with the cleaner $h\to \gamma\gamma$ channel, provided systematic uncertainties can be kept under good control. In this context, we show that a rapidity binning can significantly reduce correlations, improving the sensitivity to $\mathcal{O}_{\varphi q}^{(1)}$ and $\mathcal{O}_{\varphi u}$.

Finally, we assess the impact of the $Vh$ production channel on aTGC measurements, comparing with the determination at lepton colliders.

Based mostly on 2207.YYZZZ (to be published soon) and partially on 2011.13941 and 2004.06122.

Type of talk Future prospects

Primary author

Alejo Nahuel Rossia (University of Manchester)


Christophe Grojean (DESY (Hamburg) and Humboldt University (Berlin)) Fady Bishara (DESY) Giuliano Panico (University of Florence and INFN Florence) Philipp Englert (DESY Hamburg)

Presentation materials