We study CP sensitive observables in chargino production in electron-positron collisions with subsequent two-body decay of one chargino into a W boson. We identify the CP odd elements of the W boson density matrix and propose CP sensitive triple-product asymmetries of the chargino decay products. We calculate the density-matrix elements, the CP asymmetries and the cross sections in the Minimal Supersymmetric Standard Model with complex parameters \mu and M_1 for an e+ e- linear collider with \sqrt{s} = 800 GeV and longitudinally polarized beams. The asymmetries can reach 7% and we discuss the feasibility of measuring these asymmetries.
@article{arxiv.hep-ph/0410054,
title = {CP sensitive observables in chargino production and decay into a W boson},
author = {O. Kittel and A. Bartl and H. Fraas and W. Majerotto},
journal= {arXiv preprint arXiv:hep-ph/0410054},
year = {2009}
}