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

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

2004-10-04

arxiv.org/abs/hep-ph/0410054v1

Phys.Rev. D70 (2004) 115005

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 7 figures

Scientific paper

10.1103/PhysRevD.70.115005

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.

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