Eur. Phys. J. C (2007) 51: 149
https://doi.org/10.1140/epjc/s10052-007-0279-6

Regular Article - Theoretical Physics

CP asymmetries in chargino production and decay: the three-body decay case

¹ Institut für Theoretische Physik, Universität Wien, 1090, Vienna, Austria
² Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
³ TH Division, Physics Department, CERN, 1211, Geneva 23, Switzerland

^* e-mail: hesselb@physik.uni-wuerzburg.de

Received: 26 October 2006
Revised: 24 January 2007
Published online: 1 June 2007

Abstract

We study CP violation in chargino production and decay in the minimal supersymmetric standard model (MSSM) with complex parameters at an e⁺e^- linear collider with longitudinally polarised beams. We investigate CP-sensitive asymmetries by means of triple product correlations and study their dependence on the complex parameters M₁ and μ. We give numerical predictions for the asymmetries and their measurability at the future International Linear Collider. Our results show that the CP asymmetries can be measured in a large region of the MSSM parameter space.