Combined measurements of Higgs boson production and decay using up to 80  fb−1 of proton-proton collision data at s

Leading two-loop corrections to the Higgs boson self-couplings in models with extended scalar sectors

“…However, to this point, all measured Higgs-boson properties are in agreement with SM predictions within experimental and theoretical uncertainties (see for example Ref. [3]). This seems to suggest that the BSM scalar states are somehow made difficult to find, being either heavy and beyond the reach of current experiments (in other words, decoupled), or hidden by some symmetry or mechanism.…”

“…Several charge assignments are possible for the fermion families, corresponding to distinct types of 2HDM [83][84][85] -but as we only consider effects from top quarks in the following we do not need to specify a type here. 3 The Z 2 symmetry can be broken softly -i.e. without reintroducing dangerous FCNCs -via an off-diagonal mass term m 2 3 Φ † 2 Φ 1 + h.c. .…”

Flavourful SMEFT likelihood for Higgs and electroweak data

“…• Combined ATLAS measurement of the Higgs signal strength based on the 80 fb −1 of run-2 data ( Table 6 of Ref. [42] with the correlation matrix in Fig. 6).…”

Higgs-boson phenomenology: a broad perspective.

“…Higgs-boson phenomenology: a broad perspective Laura Reina Figure 1: Experimental constraints on different types of 2HDM from the combined fit presented in Ref. [1] and from the most recent publications of the LHC experiments [2,3].…”

“…Notably, today the leading production mode, gluon-gluon fusion (gg → H), as well as bb → H, are known at N 3 LO in QCD [8,9] and all production modes except the associated production with a tt pair are known at NNLO of QCD and NLO of EW corrections. 2 Similarly, several orders of QCD and EW corrections are known for all decay modes. The residual theoretical uncertainties on the fixed-order cross sections and branching ratios are for most modes reduced to only a few percent, the largest residual uncertainties from scale-dependence, α s , and PDF being of the order of approximately 15-20% in the case of Higgs-boson production with heavy quarks (top and bottom).…”