The physics prospects at the LHC luminosity upgrade of LHC, HL-LHC,
with 300 and 3000 fb-1 of data simulated in the ATLAS detector are
presented and discussed.
The ultimate precision attainable on measurements of the couplings of
the 125 GeV boson to elementary fermions and bosons is discussed, as
well as perspectives on the searches for partners associated with it.
The electroweak...
We study the correlation between the value of the hZZ coupling and the nature of the electroweak phase transition. We consider a singlet extension of the SM to study the correlation of the hZZ coupling and the first order phase transition. Furthermore, we study how the further colliders, for example CEPC and ILC, can probe the precision hZZ coupling.
The productions of double SM-like Higgs bosons at the future colliders, such as CEPC/ILC and SppC, will play a crucial role in determining the SM-like Higgs self couplings. In this talk, I will present our recent project in searching for the SM-like Higgs boson pairs at the CEPC/ILC. We will compare the search potentials for this process at different C.O.M. energies, namely, at CEPC 400...
We propose a measurement of the top Yukawa coupling at a 100 TeV hadron collider, based on boosted Higgs and top decays. We find that the top Yukawa coupling can be measured to 1%, with excellent handles for reducing systematic and theoretical uncertainties, both from side bands and from $t\bar{t}H / t\bar{t}Z$ ratios.
