Anomalous couplings in double Higgs production
By Roberto Contino, M. Ghezzi, M. Moretti, G. Panico, F. Piccinini, A. Wulzer. 2012
156 citations recorded by the source corpus.
A bstractThe process of gluon-initiated double Higgs production is sensitive to nonlinear interactions of the Higgs boson. In the context of the Standard Model, studies of this process focused on the extraction of the Higgs trilinear coupling. In a general parametrization of New Physics effects, however, an even more interesting interaction that can be tested through this channel is the $ t\overline t hh $ coupling. This interaction vanishes in the Standard Model and is a genuine signature of theories in which the Higgs boson emerges from a strongly-interacting sector. In this paper we perform a model-independent estimate of the LHC potential to detect anomalous Higgs couplings in gluon-fusion double Higgs production. We find that while the sensitivity to the trilinear is poor, the perspectives of measuring the new $ t\overline t hh $ coupling are rather promising.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/c77505865d1a48ddb6f365535078b988787ffa24
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In Astronomy and Astrophysics
In Nuclear and High Energy Physics
- Cms Collaboration
- Atlas Collaboration
- Gudrun Heinrich
- Fabio Maltoni
- M. Grazzini
- Valentin Hirschi
- G. Panico
- Ansgar Denner
Citations in the corpus
- Physics at a 100 TeV pp collider: Higgs and EW symmetry breaking studies (2016, background): “In these scenarios, an analysis of the non-linear Higgs couplings can be more sensitive to new-physics effects than other direct or indirect probes [24, 25].”
- Effective field theory analysis of double Higgs boson production via gluon fusion (2015, background): “This is in agreement with previous studies, which pointed out the strong sensitivity of the double Higgs cross section on the tt̄hh quartic coupling; see [12] and references therein.”
- Higgs Physics at the HL-LHC and HE-LHC (2019, background): “The third type involves diagrams that have no counterpart in the SM [983].”
- Higgs boson self-coupling measurements using ratios of cross sections (2013, background): “We note that the above structure, and hence the different contributions to the cross section, can of course be modified if new physics that allows new resonances to run in the triangle and box loops (or adds new couplings, like an ffHH interaction) is present [48–53].”
- Search for Higgs boson pair production in the γ γ bb¯ final state with 13 TeV pp collision data collected by the ATLAS experiment (2018, background): “Anomalous couplings can either be extensions to the SM, such as contact interactions between two top quarks and two Higgs bosons [12], or be deviations from the SM values of the couplings between the Higgs boson and other particles.”