CP violation at one loop in the polarization-independent chargino production in e+e- collisions

Details CP violation at one loop in the polarization-independent chargino production in e+e- collisions CP violation at one loop in the polarization-independent chargino production in e+e- collisions

2007-09-19

arxiv.org/abs/0709.2994v2

Phys.Rev.D76:115006,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 5 figures

Scientific paper

10.1103/PhysRevD.76.115006

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.

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