A T-odd asymmetry in neutralino production and decay
- Author(s)
- Alfred Bartl, Stefan Hesselbach, Karl Hohenwarter-Sodek, Hans Fraas, Gudrid Moortgat-Pick
- Abstract
We study CP-violating effects in neutralino production and subsequent decay within the Minimal Supersymmetric Standard Model with complex parameters M 1 and μ. The observable we propose is a T-odd asymmetry based on a triple product in neutralino production e+e- → χ̃i0χ̃i0, i = 1,...,4, with subsequent leptonic three-body decay χ̃i0 → χ̃i0l+l -, l = e, μ, at an e+e- linear collider with √s = 500 GeV and polarised beams. We provide compact analytical formulae for the cross section and the T-odd asymmetry taking into account the complete spin correlations between production and decay. We give numerical predictions for the cross section and the T-odd asymmetry. The asymmetry can go up to 10%. © SISSA/ISAS 2004.
- Organisation(s)
- Particle Physics
- External organisation(s)
- Universität Wien, Julius-Maximilians-Universität Würzburg, Durham University
- Journal
- Journal of High Energy Physics
- Volume
- 2004
- No. of pages
- 28
- ISSN
- 1029-8479
- DOI
- https://doi.org/10.1088/1126-6708/2004/08/038
- Publication date
- 2004
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103036 Theoretical physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/a-todd-asymmetry-in-neutralino-production-and-decay(24e36f5b-3ad6-4bf6-a012-407d0dc1bb03).html