Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-03-04
Phys.Rev. D70 (2004) 014010
Physics
High Energy Physics
High Energy Physics - Phenomenology
56 pages, 14 figures; a few typos corrected
Scientific paper
10.1103/PhysRevD.70.014010
Low-energy results from measurements of leptonic dipole moments are used to derive constraints on the CP-violating phases of the dimensionful parameters of the minimal supersymmetric extension of the standard model (MSSM). We use these (known) bounds to investigate the impact of these phases on CP-even cross sections at high-energy e^+e^- and e^-e^- colliders. To that end we define two measures of the significance with which the existence of non--vanishing phases could be deduced from the measurements of these cross sections. We find that highly significant evidence for deviations from the CP-conserving MSSM could be obtained at the next e^+e^- collider even if the electric dipole moment of the electron is very small or zero. We also analyze a CP-odd final state polarization, which can be large when two different charginos or neutralinos are produced. Finally, we study correlations between the phase--sensitive observables.
Choi Seong Youl
Drees Manuel
Gaissmaier Benedikt
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