Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-10-03
JHEP 0601 (2006) 170
Physics
High Energy Physics
High Energy Physics - Phenomenology
30 pages, minor changes in the introduction, references added
Scientific paper
10.1088/1126-6708/2006/01/170
We consider neutralino production and decay e^+e^ --> chi^0_i chi^0_j, chi^0_j --> chi^0_1 f \bar{f} at a linear collider with transverse e^+ and e^- beam polarization. We propose CP asymmetries by means of the azimuthal distribution of the produced neutralinos and of that of the final leptons, while taking also into account the subsequent decays of the neutralinos. We include the complete spin correlations between production and decay. Our framework is the Minimal Supersymmetric Standard Model with complex parameters. In a numerical study we show that there are good prospects to observe these CP asymmetries at the International Linear Collider and estimate the accuracy expected for the determination of the phases in the neutralino sector.
Bartl Alfred
Fraas Hans
Hesselbach Stefan
Hohenwarter-Sodek Karl
Kernreiter Thomas
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