192 citations · 510 across the 12 of their papers we have counts for
14 papers
Global Analysis of the ALP Effective Theory
Sebastian Bruggisser, Lara Grabitz, Susanne Westhoff
We perform a global fit of the effective Lagrangian for axion-like particles (ALPs) to data. By combining LHC observables from top physics, dijet and di-boson production with elect…
Top Secrets: Long-Lived ALPs in Top Production
Lovisa Rygaard, Jeremi Niedziela, Ruth Schäfer +4
We investigate the discovery potential for long-lived particles produced in association with a top-antitop quark pair at the (High-Luminosity) LHC. Compared to inclusive searches f…
Resolving the Flavor Structure in the MFV-SMEFT
Sebastian Bruggisser, Danny van Dyk, Susanne Westhoff
We constrain the flavor structure of Wilson coefficients in the Standard Model Effective Field Theory (SMEFT) from data. In the SMEFT, new physics effects in couplings of up-type a…
Status of Electroweak Baryogenesis in Minimal Composite Higgs
Sebastian Bruggisser, Benedict von Harling, Oleksii Matsedonskyi +1
We present an update on the status of electroweak baryogenesis in minimal composite Higgs models. The particularity of this framework is that the electroweak phase transition can p…
Dilaton at the LHC: Complementary Probe of Composite Higgs
Sebastian Bruggisser, Benedict von Harling, Oleksii Matsedonskyi +1
The dilaton is predicted in various extensions of the standard model containing sectors with an approximate spontaneously-broken conformal invariance. As a Goldstone boson of a spo…
To Profile or To Marginalize -- A SMEFT Case Study
Ilaria Brivio, Sebastian Bruggisser, Nina Elmer +3
Global SMEFT analyses have become a key interpretation framework for LHC physics, quantifying how well a large set of kinematic measurements agrees with the Standard Model. This ag…
From Models to SMEFT and Back?
Ilaria Brivio, Sebastian Bruggisser, Emma Geoffray +5
We present a global analysis of the Higgs and electroweak sector, in the SMEFT framework and matched to a UV-completion. As the UV-model we use the triplet extension of the electro…
The Flavor of UV Physics
Sebastian Bruggisser, Ruth Schäfer, Danny van Dyk +1
New physics not far above the TeV scale should leave a pattern of virtual effects in observables at lower energies. What do these effects tell us about the flavor structure of a UV…
O new physics, where art thou? A global search in the top sector
I. Brivio, S. Bruggisser, F. Maltoni +5
We provide a comprehensive global analysis of Run II top measurements at the LHC in terms of dimension-6 operators. A distinctive feature of the top sector as compared to the Higgs…
Electroweak Phase Transition and Baryogenesis in Composite Higgs Models
Sebastian Bruggisser, Benedict von Harling, Oleksii Matsedonskyi +1
We present a comprehensive study of the electroweak phase transition in composite Higgs models, where the Higgs arises from a new, strongly-coupled sector which confines near the T…
The Baryon Asymmetry from a Composite Higgs
Sebastian Bruggisser, Benedict von Harling, Oleksii Matsedonskyi +1
We study the nature of the electroweak phase transition (EWPT) in models where the Higgs emerges as a pseudo-Nambu-Goldstone boson of an approximate global symmetry of a new strong…
CP-violation for Electroweak Baryogenesis from Dynamical CKM Matrix
Sebastian Bruggisser, Thomas Konstandin, Geraldine Servant
We show that the CKM matrix can be the source of CP violation for electroweak baryogenesis if Yukawa couplings vary at the same time as the Higgs acquires its vacuum expectation va…
The Last Gasp of Dark Matter Effective Theory
Sebastian Bruggisser, Francesco Riva, Alfredo Urbano
We discuss an interesting class of models, based on strongly coupled Dark Matter (DM), where sizable effects can be expected in LHC missing energy (MET) searches, compatibly with a…
Strongly Interacting Light Dark Matter
Sebastian Bruggisser, Francesco Riva, Alfredo Urbano
In the presence of approximate global symmetries that forbid relevant interactions, strongly coupled light Dark Matter (DM) can appear weakly coupled at small energy and generate a…