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Classifying the CP properties of the ggH coupling in H+2j production
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The Higgs-gluon interaction is crucial for LHC phenomenology. To improve the constraints on the CP structure of this coupling, we investigate Higgs production with two jets using machine learning. In particular, we exploit the CP sensitivity of the so far neglected phase space region that differs from the typical vector boson fusion-like kinematics. Our results indicate that further improvements in the current experimental limits could be achievable using our techniques. We also discuss the most relevant observables and how CP violation in the Higgs-gluon interaction can be disentangled from CP violation in the interaction between the Higgs boson and massive vector bosons. Assuming the absence of CP-violating Higgs interactions with coloured beyond-the-Standard-Model states, our projected limits on a CP-violating top-Yukawa coupling are competitive with more direct probes like top-associated Higgs production and limits from a global fit.
Forward citations
Cited by 6 Pith papers
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Two-loop leading-color QCD corrections for Higgs plus two-jet production in the heavy-top limit
Two-loop leading-color helicity amplitudes for H+2 jets in the heavy-top limit are computed analytically and validated, enabling NNLO phenomenology and revealing an anomalous threshold.
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$\mathcal{CP}$-Analyses with Symbolic Regression
Symbolic regression produces analytic, detector-level CP-odd observables for WBF Higgs production and an analytic reconstruction of the Collins-Soper angle in ttH that are competitive with black-box ML and classical methods.
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Probing the Inert Doublet Model via Vector-Boson Fusion at a Muon Collider
A 10 TeV muon collider could discover inert-doublet scalars produced via vector-boson fusion, reaching 5 sigma for selected benchmark points with machine-learning analysis, while 3 TeV lacks sensitivity.
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Probing dark matter through charged Higgs pair production at future multi-TeV muon colliders: A machine-learning analysis
Within the Inert Doublet Model, machine-learning selection could make charged Higgs pair production at a 10-14 TeV muon collider a 5-sigma probe of dark matter for several benchmark points.
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Parton spin correlations and $\mathcal{CP}$ properties in Higgs boson decay at future lepton colliders
In H→gg at a 240 GeV e+e− collider, the four-point energy-energy correlator with energy weight n=4 gives the strongest sensitivity to gluon spin correlations and, assuming perfect splitting-mode identification in the ...
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Sensitivity to $\mathcal{CP}$-violating effective couplings in the top-Higgs sector
Combining ttbar H and single-top H production at the LHC can separate the real and imaginary parts of a CP-violating top Yukawa coupling, with projected HL-LHC constraints about twice as strong as current ATLAS bounds.
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