Abstract

We review and discuss CP violation in the minimal standard model of the electroweak interactions, and in general left–right symmetric electroweak models based on the gauge group SU(2)L×SU(2)R×U(1). We show that in the left‐right symmetric models the contribution to ε′ due to WL‐WR mixing could be as large as the present experimental limit. Some other effects of WL‐WR mixing are also considered.

Highlights

  • This rqmrr wasprcpmcdu an ucuuni or workqmnsorulby qn agcrrcyof tk UniicdSISIm

  • We review and discuss CP violation in the minimal standard model of the electroueak interactions, and in general left-right

  • Note that studies of CP violation in theme models are of intcreRl regarclle~u of whether or not they account for the ob~erv~d CP viulJI

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Summary

CP VIOLATICXJ IN THE MINIMAL STANDARD MODEL

Higgs doublet) there is no CP violation in the Higgs three generations the W-quark couplings involve pheee.[6] The AS = -1 Hamiltonian in the local limit uodel with one sector, but for a CP-violating is of the form (6). The contributions cw and t~l of the standard model to c and c’ arc proportional by[8] to the CP-violating parameter K’ = 62S3S6 and are given. The value of B has been extracted from K + Wn data using PCAC and SU(3) symmetry, with the result B = +-J.33 (Ref. 9). Equation (8) invol~es the assumption that the long-distance contribution to ImA(KO + KO) can be ignored in the Uu-Yang pt,ase convention.[10]. The measured b-lifetime nnd the previous bound on the b-quark branching ratios set an upper bound on S2(S2 + S3C6) und this implies an upper boitnd Fmax on F (Ref. 12)

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The fermlons
The magnitude of this contribution is expected to be less than
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Similarly one obtainq
Present experiments studflng
If a value cf
University preprint
We ignore possible
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Full Text
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