Published December 2007
| Version v1
Journal article
Aspects of CP violation in the HZZ coupling at the LHC
- 1. Centre for High Energy Physics, Indian Institute of Science, Bangalore, 560 012 (India)
- 2. Dept. of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ (United Kingdom)
- 3. Theory Division, Physics Department, CERN, CH-1211 Geneva 23 (Switzerland)
Description
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
Additional details
Identifiers
Publishing Information
- Journal Title
- Journal of High Energy Physics
- Journal Volume
- 2007
- Journal Issue
- 12
- Journal Page Range
- p. 031
- ISSN
- 1126-6708
INIS
- Country of Publication
- Italy
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39044379
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ANGULAR DISTRIBUTION; ASYMMETRY; CERN LHC; COUPLING; CP INVARIANCE; HIGGS BOSONS; LEPTONS; PARTICLE DECAY; PARTICLE KINEMATICS; SENSITIVITY; STANDARD MODEL; Z NEUTRAL BOSONS
- Descriptors DEC
- ACCELERATORS; BOSONS; CYCLIC ACCELERATORS; DECAY; DISTRIBUTION; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; INVARIANCE PRINCIPLES; MATHEMATICAL MODELS; PARTICLE MODELS; POSTULATED PARTICLES; QUANTUM FIELD THEORY; STORAGE RINGS; SYNCHROTRONS; UNIFIED GAUGE MODELS