Classifying the CP properties of the ggH coupling in H+2j production

verfasst von: Henning Bahl, Elina Fuchs, Marco Menen, Marc Hannig
Abstract: The Higgs-gluon interaction is crucial for LHC phenomenology. To improve the constraints on the CP structure of this coupling, we investigate Higgs production with two jets using machine learning. In particular, we exploit the CP sensitivity of the so far neglected phase space region that differs from the typical vector boson fusion-like kinematics. Our results indicate that further improvements in the current experimental limits could be achievable using our techniques. We also discuss the most relevant observables and how CP violation in the Higgs–gluon interaction can be disentangled from CP violation in the interaction between the Higgs boson and massive vector bosons. Assuming the absence of CP-violating Higgs interactions with coloured beyond-the-Standard-Model states, our projected limits on a CP-violating top-Yukawa coupling are competitive with more direct probes like top-associated Higgs production and limits from a global fit.
Organisationseinheit(en): Institut für Theoretische Physik
Externe Organisation(en): University of Chicago
CERN - Europäische Organisation für Kernforschung
Physikalisch-Technische Bundesanstalt (PTB)
Typ: Artikel
Journal: SciPost Physics
Band: 8
Anzahl der Seiten: 34
Publikationsdatum: 20.01.2025
Publikationsstatus: Veröffentlicht
Peer-reviewed: Ja
ASJC Scopus Sachgebiete: Statistische und nichtlineare Physik, Atom- und Molekularphysik sowie Optik, Kern- und Hochenergiephysik, Physik der kondensierten Materie
Elektronische Version(en): https://doi.org/10.21468/SciPostPhysCore.8.1.006 (Zugang: Offen)

BibTeX

@article{810873aefbd3441d873b3448788a98b6,
title = "Classifying the CP properties of the ggH coupling in H+2j production",
abstract = "The Higgs-gluon interaction is crucial for LHC phenomenology. To improve the constraints on the CP structure of this coupling, we investigate Higgs production with two jets using machine learning. In particular, we exploit the CP sensitivity of the so far neglected phase space region that differs from the typical vector boson fusion-like kinematics. Our results indicate that further improvements in the current experimental limits could be achievable using our techniques. We also discuss the most relevant observables and how CP violation in the Higgs–gluon interaction can be disentangled from CP violation in the interaction between the Higgs boson and massive vector bosons. Assuming the absence of CP-violating Higgs interactions with coloured beyond-the-Standard-Model states, our projected limits on a CP-violating top-Yukawa coupling are competitive with more direct probes like top-associated Higgs production and limits from a global fit.",
author = "Henning Bahl and Elina Fuchs and Marco Menen and Marc Hannig",
note = "Publisher Copyright: Copyright H. Bahl et al.",
year = "2025",
month = jan,
day = "20",
doi = "10.21468/SciPostPhysCore.8.1.006",
language = "English",
volume = "8",
journal = "SciPost Physics",
issn = "2542-4653",
publisher = "SciPost Foundation",
number = "1",
}