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RESEARCH PRODUCT

CP observables with spin-spin correlations in chargino production

Alfred BartlAlfred BartlO. KittelK. Hohenwarter-sodekThomas KernreiterM. Terwort

subject

PhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsElectron–positron annihilationHigh Energy Physics::PhenomenologyFOS: Physical sciencesObservableSupersymmetryPolarization (waves)01 natural sciencesNuclear physicsHigh Energy Physics - PhenomenologyCharginoHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesCP violationHigh Energy Physics::Experiment010306 general physicsLeptonMinimal Supersymmetric Standard Model

description

We study the CP-violating terms of the spin-spin correlations in chargino production e+e- -> chi^+/-_1 chi^-/+_2, and their subsequent two-body decays into sneutrinos plus leptons. We propose novel CP-sensitive observables with the help of T-odd products of the spin-spin terms. These terms depend on the polarizations of both charginos, with one polarization perpendicular to the production plane. We identify two classes of CP-sensitive observables; one requires the reconstruction of the production plane, the other not. Our framework is the Minimal Supersymmetric Standard Model with complex parameters.

yearjournalcountryeditionlanguage
2008-10-01
10.1016/j.nuclphysb.2008.04.031http://arxiv.org/abs/0802.3592