Aspects of CP violation in the HZZ coupling at the LHC
By R. Godbole, David J. Miller, M. Muhlleitner. 2007
153 citations recorded by the source corpus.
We examine the CP-conserving (CPC) and CP-violating (CPV) effects of a general HZZ coupling through a study of the process H → ZZ (�) → l + l l ′ + l ′ at the LHC. We construct asymmetries that directly probe these couplings. Further, we present complete analytical formulae for the angular distributions of the decay leptons and for some of the asymmetries. Using these we have been able to identify new observables which can provide enhanced sensitivity to the CPV HZZ coupling. We also explore probing CP violation through shapes of distributions in different kinematic variables, which can be used for Higgs bosons with mH < 2 mZ.
Subfields: Artificial Intelligence, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/249262f87bcc1b9762c2f11df7ed0a2214196071
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In Artificial Intelligence
- Atlas Collaboration
- Cms Collaboration
- Gudrun Heinrich
- G. Passarino
- Ansgar Denner
- Stefan Dittmaier
- Sven Heinemeyer
- P. Nason
In Nuclear and High Energy Physics
- Cms Collaboration
- Atlas Collaboration
- Gudrun Heinrich
- Stefan Dittmaier
- Ansgar Denner
- M. Schönherr
- M. Grazzini
- Fabio Maltoni
Citations in the corpus
- Constraints on CP-violating Higgs couplings to the third generation (2013, unknown): “Similarly, one could search for CP-violating Higgs-boson couplings to gauge bosons both at the LHC [11–18] or utilizing low-energy”
- Handbook of LHC Higgs Cross Sections: 3. Higgs Properties (2013, background): “CP is violated if at the same time in addition to c the couplings a and/orb do not vanish simultaneously [473].”
- Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV (2015, methodology): “The kinematics of the Higgs boson decay to four charged leptons, two charged leptons and two neutrinos, or two photons, and their application to the study of the properties of the Higgs boson have been extensively studied in the literature [28–31,36,38,42,42,43,45–49,51,53].”
- A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector (2012, background): “If the ’hints’ for a light Higgs should be confirmed, the H ! ZZ⇤ would o↵er a chance to establish the CP property of the Higgs if it is a CP eigenstate and possibility to explore the anomalous HZZ coupling [625,626]; the case for the HWW vertex may be less clear though.”