CP-sensitive spin-spin correlations in neutralino production at the ILC
arXiv:0905.1782 · doi:10.1088/1126-6708/2009/07/054
Abstract
We study the CP-violating terms of the spin-spin correlations in neutralino production and their subsequent two-body decays into sleptons plus leptons at the ILC. We analyze CP-sensitive observables with the help of T-odd products of the spin-spin terms. These terms depend on the polarizations of both neutralinos, with one polarization perpendicular to the production plane. We present a detailed numerical study of the CP-sensitive observables, cross sections, and neutralino branching ratios in the Minimal Supersymmetric Standard Model with complex parameters.
27 pages, 6 figures, references and comments added, version to appear in JHEP
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