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arXiv · hep-ph/0410054

CP sensitive observables in chargino production and decay into a W boson

O. Kittel·A. Bartl·H. Fraas·W. Majerotto
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Abstract

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 μand 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.

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O. Kittel, A. Bartl, H. Fraas, W. Majerotto. 2004-10-04. CP sensitive observables in chargino production and decay into a W boson. https://doi.org/10.1103/physrevd.70.115005

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