9 papers
Effective Lagrangians from functional matching
Stefan Dittmaier, Sebastian Schuhmacher, Maximilian Stahlhofen
We briefly review a variant of functional matching to derive an Effective Field Theory (EFT) for heavy particles at the one-loop level in the top-down approach. The method integrat…
The status of theory in the electroweak sector: Radiative corrections, salient features, approximations
Stefan Dittmaier
Electroweak radiative corrections form a crucial ingredient in modern precision calculations for particle processes at high-energy colliders such as the Large Hadron Collider. The…
Precision calculations for electroweak multi-boson processes
S. Dittmaier
We review the salient features of next-to-leading-order QCD and electroweak corrections to the scattering of two and the production of three weak gauge bosons at the Large Hadron C…
Integrating out a heavy Higgs singlet: on the edge between SMEFT and HEFT
Stefan Dittmaier, Sebastian Schuhmacher, Maximilian Stahlhofen
We use a functional approach based on the background-field formalism and the expansion by regions to integrate out the heavy Higgs field (associated with the mass eigenstate H) at…
A Linear Collider Vision for the Future of Particle Physics
H. Abramowicz, E. Adli, F. Alharthi +446
In this paper we review the physics opportunities at linear colliders with a special focus on high centre-of-mass energies and beam polarisation, take a fresh look at the…
Electroweak splitting functions in the Standard Model and beyond
Stefan Dittmaier, Max Reyer
We derive quasi-collinear factorization formulas in generic spontaneously broken gauge theories with scalars, fermions, and vector bosons. Specifically, we obtain polarized leading…