Bounding the Charm Yukawa

Understand

The study of the properties of the observed Higgs boson is one of the main research activities in High Energy Physics.

• Although the couplings of the Higgs to the weak gauge bosons and third generation quark and leptons have been studied in detail, little is known about the Higgs couplings to first and second generation fermions.
• In this article, we study the charm quark Higgs coupling in the so-called $\kappa$ framework.
• We emphasize the existence of specific correlations between the Higgs couplings that can render the measured LHC Higgs production rates close to the SM values in the presence of large deviations of the charm coupling from its SM value, $\kappa_c = 1$.