Comparison of electric dipole moments and the Large Hadron Collider for probing CP violation in triple boson vertices
- Michigan Center for Theoretical Physics (MCTP), University of Michigan, Ann Arbor, Michigan 48109-1120 (United States)
- CERN, Theory Division, CH-1211 Geneva 23 (Switzerland)
CP violation from physics beyond the standard model may reside in triple boson vertices of the electroweak theory. We review the effective theory description and discuss how CP-violating contributions to these vertices might be discerned by electric dipole moments (EDM) or diboson production at the LHC. Despite triple boson CP-violating interactions entering EDMs only at the two-loop level, we find that EDM experiments are generally more powerful than the diboson processes. To give an example to these general considerations we perform the comparison between EDMs and collider observables within supersymmetric theories that have heavy sfermions, such that substantive EDMs at the one-loop level are disallowed. EDMs generally remain more powerful probes, and next-generation EDM experiments may surpass even the most optimistic assumptions for LHC sensitivities.
- OSTI ID:
- 21308546
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 80, Issue 1; Other Information: DOI: 10.1103/PhysRevD.80.015009; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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