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Revisiting $\mathbf{Vh(\rightarrow b \bar b)}$ at the LHC and FCC-hh by Bishara, Fady; Englert, Philipp; Grojean, Christophe; Panico, Giuliano; Rossia, Alejo N. is a scholarly article available to read on EtoBox.

What is Revisiting $\mathbf{Vh(\rightarrow b \bar b)}$ at the LHC and FCC-hh about?

Diboson production processes provide good targets for precision measurements at present and future hadron colliders. We consider $Vh$ production, focusing on the $h \to b\bar b$ decay channel, whose sizeable cross section makes it accessible at the LHC. We perform an improved analysis by 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 via mass-drop tagging or resolved $b$-jets. This strategy gives sensitivity to 4 dimension-6 SMEFT operators that modify the $W$ and $Z$ couplings to quarks and is competitive with the bounds obtained from global fits. The benefit of the $h\to b\bar b$ decay channel is the fact that it is the only $Vh$ channel accessible at the LHC Run 3 and HL-LHC, while at FCC-hh it is competitive with the effectively background-free $h\to \gamma\gamma$ channel assuming $\lesssim 5$% systematic uncertainty. Combining the boosted and resolved categories yields a 17% improvement on the most strongly bounded Wilson coefficient at the LHC Run 3 with respect to the boosted category alone (and a 7% improvement at FCC-hh). We also show that, at FCC-hh, a binning in the rapi

Author

Bishara, Fady; Englert, Philipp; Grojean, Christophe; Panico, Giuliano; Rossia, Alejo N.

Published

2022

Language

EN