CP observables with spin-spin correlations in chargino production

Abstract

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.

21pp; discussion of background processes improved, references added; final version for Nucl. Phys. B

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Cited by in corpus (9)

• Physics at the e+ e- Linear Collider
• Probing SUSY CP Violation in Two-Body Stop Decays at the LHC
• Normal tau polarisation as a sensitive probe of CP violation in chargino decay
• Measurement of CP asymmetries in neutralino production at the ILC
• CP asymmetries in the supersymmetric trilepton signal at the LHC
• SUSY CP phases and asymmetries at colliders
• CP-sensitive spin-spin correlations in neutralino production at the ILC
• CP Violation in Three-Body Chargino Decays
• CP violation in the chargino/neutralino sector of the MSSM