Aspects of CP violation in the HZZ coupling at the LHC

Godbole, Rohini M and Miller, David J and Muhlleitner, Margarete M (2007) Aspects of CP violation in the HZZ coupling at the LHC. In: Journal of High Energy Physics (12).

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Abstract

We examine the CP-conserving (CPC) and CP-violating (CPV) effects of a general HZZ coupling through a study of the process H → $ZZ^{(\ast)}$ → $\ell^+\ell^-\ell^{\prime+}\ell^{\prime-}$ 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 beused for Higgs bosons with $m_H < 2m_Z$.

Item Type:	Journal Article
Publication:	Journal of High Energy Physics
Publisher:	Institute of Physics Publishing for SISSA
Additional Information:	This article copyright belongs to Institute of Physics Publishing for SISSA
Department/Centre:	Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Date Deposited:	20 Feb 2008
Last Modified:	19 Sep 2010 04:42
URI:	http://eprints.iisc.ac.in/id/eprint/13070

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