13 papers
Electroweak precision observables at NLL order in the SMEFT
Ulrich A. Haisch, Ben A. Stefanek
Electroweak precision observables (EWPO) remain among the most powerful indirect probes of physics beyond the Standard Model (BSM), and future colliders are expected to s…
Matrix element method at NLO: A fine proof of concept in POWHEG
Ulrich Haisch, Jakob Linder, Luc Schnell +2
The matrix element method (MEM) provides a fully probabilistic approach to confront experimental events with theory, retaining all correlations in the scattering matrix element. Wh…
Constraining the Higgs potential using multi-Higgs production
Jia-Le Ding, Zach Gillis, Ulrich Haisch +10
The Higgs self-couplings remain only weakly constrained by current Large Hadron Collider (LHC) measurements, leaving ample room for physics beyond the Standard Model that could mod…
Neural simulation-based inference of the Higgs trilinear self-coupling via off-shell Higgs production
Aishik Ghosh, Maximilian Griese, Ulrich Haisch +1
One of the forthcoming major challenges in particle physics is the experimental determination of the Higgs trilinear self-coupling. While efforts have largely focused on on-shell d…
Dijet bounds on third-generation four-quark operators
Maximilian Freiheit, Ulrich Haisch
We use dijet measurements from the Large Hadron Collider to constrain ten third-generation four-quark operators in the Standard Model effective field theory. At tree level, only th…
Polarized-boson pairs at NLO in the SMEFT
Ulrich Haisch, Jakob Linder, Giovanni Pelliccioli +2
We present a computation of diboson production in the channel at the Large Hadron Collider (LHC), incorporating leptonic decays of the gauge bosons and considering interm…