Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-10-06
Phys.Lett.B606:107-115,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages latex with 2 figures, replaced with version accepted by Physics Letters B for publication. Now includes full discussi
Scientific paper
10.1016/j.physletb.2004.10.061
We consider the most general gauge-invariant, chirality-conserving contact interactions in the process e +e- -> gamma Z, of the type proposed Abraham and Lampe, in order to explore the possibility of CP violation at future linear colliders in the presence of polarized beams. We hereby extend recent work on CP violation due to anomalous triple-gauge boson vertices. We isolate combinations of couplings which are genuinely CP violating, pointing out which of these can only be studied with the use of transverse polarization. We place constraints on these couplings that could arise from suitably defined CP-odd asymmetries, considering realistic polarization (either longitudinal or transverse) of 80% and 60% for the electron and positron beams respectively, and with an integrated luminosity \int dt L of 500 fb^{-1} at a centre of mass energy of \sqrt{s}=500 GeV.
Ananthanarayan Balasubramanian
Rindani Saurabh D.
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