5 papers
Could electron-top interactions spoil the measurement of the Higgs trilinear? -A quantitative estimate at future lepton colliders-
Lukas Allwicher, Christophe Grojean, Lucine Tabatt
The measurement of the Higgs self-coupling is considered the next milestone in the study of the Higgs boson properties. At future facilities below the double Higgs product…
Physics Performance and Detector Requirements at an Asymmetric Higgs Factory
Antoine Laudrain, Ties Behnke, Carl Mikael Berggren +7
The Hybrid Asymmetric Linear Higgs Factory (HALHF) proposes a shorter and cheaper design for a future Higgs factory. It reaches a GeV using a 500 GeV electron beam…
The flavor invariants of the SM
Christophe Grojean, Jonathan Kley, Damien Leflot +1
Sixty years after the experimental discovery of CP violation in the quark sector, the existence of a similar CP violation in the lepton sector is still to be established. Actually,…
A log story short: running contributions to radiative Higgs decays in the SMEFT
Christophe Grojean, Guilherme Guedes, Jasper Roosmale Nepveu +1
We investigate the renormalization of the radiative decays of the Higgs to two gauge bosons in the Standard Model Effective Field Theory at mass dimension eight. Given that these a…
ALPs, the on-shell way
Enrico Bertuzzo, Christophe Grojean, Gabriel M. Salla
We study how the coupling between axion-like particles (ALPs) and matter can be obtained at the level of on-shell scattering amplitudes. We identify three conditions that allow us…