A CP asymmetry in e+e−→χ̃0iχ̃0j→χ̃0jττ̃k with tau polarization
| Autor: | O. Kittel, Thomas Kernreiter, Alfred Bartl |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Density matrix
Physics Nuclear and High Energy Physics Particle physics 010308 nuclear & particles physics Electron–positron annihilation media_common.quotation_subject Supersymmetry Polarization (waves) 01 natural sciences Asymmetry 0103 physical sciences Neutralino CP violation High Energy Physics::Experiment 010306 general physics media_common Minimal Supersymmetric Standard Model |
| Zdroj: | Physics Letters B. 578:341-348 |
| ISSN: | 0370-2693 |
| DOI: | 10.1016/j.physletb.2003.10.097 |
| Popis: | We propose a CP-odd asymmetry in the supersymmetric process e + e − → χ 0 i χ 0 j → χ 0 j τ ∓ τ k ± by means of the transverse τ ∓ polarization. We calculate the asymmetry and cross sections at a future linear collider in the 500 GeV c.m.s. energy range with longitudinal polarized beams and high luminosity. We work in the Minimal Supersymmetric Standard Model with complex parameters μ , M 1 and A τ . The asymmetry can reach values up to 60%. We also estimate the sensitivity for measuring the τ polarization necessary to probe the CP asymmetry. |
| Databáze: | OpenAIRE |
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