CP violation at one loop in the polarization-independent chargino production in e+e- collisions
arXiv:0709.2994 · doi:10.1103/PhysRevD.76.115006
Abstract
Recently Osland and Vereshagin noticed, based on sample calculations of some box diagrams, that in unpolarised e+e- collisions CP-odd effects in the non-diagonal chargino-pair production process are generated at one-loop. Here we perform a full one-loop analysis of these effects and point out that in some cases the neglected vertex and self-energy contributions may play a dominant role. We also show that CP asymmetries in chargino production are sensitive not only to the phase of mu parameter in the chargino sector but also to the phase of stop trilinear coupling A_t.
14 pages, 5 figures
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Cited by in corpus (7)
- CP observables with spin-spin correlations in chargino production
- Normal tau polarisation as a sensitive probe of CP violation in chargino decay
- SUSY CP phases and asymmetries at colliders
- CP-sensitive spin-spin correlations in neutralino production at the ILC
- Chargino Production at a future LC in the MSSM with complex Parameters: NLO Corrections
- Polarization-independent CP-odd Observable in e^+e^- Chargino Production at One Loop
- CP violation in chargino production in e+e- collisions