Conveners
Wildcard talks
- Milada Muhlleitner (KIT - Karlsruhe Institute of Technology (DE))
- Ramona Groeber (Università di Padova and INFN, Sezione di Padova)
Wildcard talks
- Milada Muhlleitner (KIT - Karlsruhe Institute of Technology (DE))
- Ramona Groeber (Università di Padova and INFN, Sezione di Padova)
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Haider Alhazmi6/2/22, 6:30 PM
We investigate the collider signature of the real singlet extension of the standard model. A definitive correlation exists between the strength of the phase transition and the trilinear coupling of the Higgs to two singlet-like scalars, and hence between the phase transition and non-resonant scalar pair production involving the singlet at colliders. We study the prospects for observing these...
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Johannes Braathen (DESY)6/2/22, 6:45 PM
The trilinear Higgs coupling $\lambda_{hhh}$ is crucial for determining the structure of the Higgs potential and for probing possible effects of physics beyond the Standard Model (SM). Focusing on the Two-Higgs-Doublet Model as a concrete example, I will discuss the calculation of the leading two-loop corrections to $\lambda_{hhh}$, and show that this coupling can be significantly enhanced...
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Martin Gabelmann (DESY)6/2/22, 7:00 PM
The investigation of the trilinear self-coupling of the discovered Higgs boson is one of the main goals of particle physics in the near future.
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We provide predictions for this coupling, expressed in terms of the coupling modifier $\kappa_\lambda$, incorporating one-loop corrections within arbitrary renormalizable QFTs.
The presented framework allows to apply a wide class of pre- and... -
Jannis Lang6/3/22, 9:00 AM
We present results for Higgs boson pair production in gluon fusion
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including both, NLO (2-loop) QCD corrections with full top quark
mass dependence as well as anomalous couplings related to operators
describing effects of physics beyond the Standard Model. The latter
can be realized in non-linear (HEFT) or linear (SMEFT) Effective
Field Theory frameworks. We show results for both and... -
Ms Lisa Biermann (Karlsruhe Institute of Technology)6/3/22, 9:15 AM
By extending the 2-Higgs Doublet Model (2HDM) by scalar dimension-6 effective field theory (EFT) operators we investigate to which extent the addition of these higher-dimensional operators can promote the electroweak phase transition to a strong first-order electroweak phase transition (SFOEWPT). We analyze the interplay between the choice of Wilson coefficients inducing an SFOEWPT and the...
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Alexandre Salas-Bernárdez6/3/22, 9:30 AM
From the embedding of the Standard Model Effective Field Theory (SMEFT) in the more general Higgs Effective Field Theory (HEFT), we expose correlations among the coefficients of the latter that, if found to be violated in future data, would lead to the experimental falsification of the SMEFT framework. These are derived from the necessary symmetric point of HEFT
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and analiticity of the SMEFT... -
Felix Egle (Institute for Theoretical Physics (ITP), Karlsruhe Institute of Technology (KIT))6/3/22, 9:45 AM
The Composite 2-Higgs-Doublet Model (C2HDM) is a composite Higgs Model where two Higgs doublets arise as pseudo Nambu-Goldstone bosons in order to retrieve the well known 2HDM but with couplings already predetermined by the composite nature of the model. Fermion masses are generated through partial compositeness entailing new heavy fermions. In this talk we present Higgs Pair production in...
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Hantian Zhang (Karlsruhe Institute of Technology)6/3/22, 10:00 AM
In this talk, I will present the first analytical calculations of leading two-loop Yukawa corrections to the Higgs pair production in the high energy limit. The electroweak corrections are expected to have a percent-level impact on the cross sections, and hence it is desirable to have the amplitudes ready for the future phenomenological studies. As a first step in this direction, we compute...
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