Conveners
Track 2 - EW HH: Parallel Session I
- Matthias Steinhauser (KIT)
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Dominik Grau (Karlsruher Institute of Technology)10/5/26, 4:15 PM
We present an analytical approach for the calculation of the top quark contribution to the two-loop electroweak 𝑔𝑔 → 𝐻𝐻 amplitude. The amplitude is considered in the forward limit, where the Mandelstam variable 𝑡 is small. We expand the amplitude at the level of the integrands and obtain good approximations for large parts of the phase space.
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Philipp Rendler (Institute for Theoretical Physics, Karlsruhe Institute of Technology)10/5/26, 4:40 PM
We present a study of quark-initiated contributions to Higgs boson pair production. Our result include the NLO QCD corrections to the electroweak quark-antiquark channel and the interference between the electroweak and QCD quark-initiated amplitudes. We compute the two-loop amplitudes analytically using the method of differential equations, with boundary conditions obtained from the large-mass...
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Sauro Carlotti (Karlsruher Institut für Technologie - ITP)10/5/26, 5:05 PM
After the discovery of the Higgs boson in 2012, the measurements of the Higgs self coupling is still a challenge for current and future experiments in particle physics.
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Higgs-boson pair production via gluon fusion is a loop-induced process. In order to increase the accuracy of the theoretical predictions for this process, higher-order corrections are necessary to reduce theoretical... -
Augustin Vestner (KIT-ITP)10/5/26, 5:30 PM
One of the main goals for the HL-LHC is the measurement of the
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trilinear Higgs self-coupling, which can be accessed directly in
processes producing two Higgs bosons simultaneously. Higher order
perturbative corrections to gluon fusion, the dominant production
channel, have a sizable impact on the extracted constraints. In
particular, NLO electroweak corrections distort the...