CP observables with spin-spin correlations in chargino production

Details CP observables with spin-spin correlations in chargino production CP observables with spin-spin correlations in chargino production

2008-02-25

arxiv.org/abs/0802.3592v2

Nucl.Phys.B802:77-91,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1016/j.nuclphysb.2008.04.031

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.

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