Aspects of CP violation in the HZZ coupling at the LHC

Godbole, R.M., Miller, D.J. and Mühlleitner, M.M. (2007) Aspects of CP violation in the HZZ coupling at the LHC. Journal of High Energy Physics, 2007(12), 031. (doi: 10.1088/1126-6708/2007/12/031)

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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 m H < 2 m Z.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Miller, Dr David
Authors: Godbole, R.M., Miller, D.J., and Mühlleitner, M.M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of High Energy Physics
ISSN (Online):1029-8479
Published Online:10 December 2007

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
389601A phenomenological investigation of physics beyond the standard model at the next generation of collidersDavid MillerParticle Physics & Astronomy Research Council (PPARC)PP/C 502722/1P&A - PHYSICS & ASTRONOMY