Constraining a CP-violating WWV coupling from the W+W- threshold cross section at LEP2
V. C. Spanos, W. J. Stirling
Abstract
The most general form of the WWZ and WWγ interaction contains a CP-violating term which has the same threshold behaviour as the Standard Model cross section. We calculate the cross section as a function of the corresponding anomalous coupling, and estimate the bounds which can be obtained from a measurement of the threshold cross section at LEP2. We show how the effect of the coupling is most pronounced in the angular distributions of the final-state fermions.
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