W-boson unitarity effects and oscillations in the neutral Kaon system

Details W-boson unitarity effects and oscillations in the neutral Kaon system W-boson unitarity effects and oscillations in the neutral Kaon system

2003-08-04

arxiv.org/abs/hep-ph/0308030v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages plain LaTeX; table in v1 contains two errors; corrected in v2 v3 conclusions rephrased

Scientific paper

We study the effects on oscillations in the neutral-Kaon system from lepton and hadron self-energy loops in the W-boson propagators. The corresponding W box diagrams are evaluated by attaching the external quark lines to covariant vertex functions for the composite Kaons, integrating over all off-shell momenta. We find that the ratio of the imaginary and real parts of the amplitude is of the same size as with the experimental value of the modulus of the CP-violating parameter epsilon.

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