Abstract
We study effects due to a compositeW or/andZ boson in four different leptonic processes where deviations from the standard model (SM) of electroweak unification may be observed. Compositeness is considered through a simple modification of theW andZ gaugeboson propagator, by a form factor depending on a composition scale parameter. We found that all the four processes point out that this type of propagator modification gives an indication of compositeness if Λ≦400 GeV. For Λ>400 GeV, deviation from SM is negligible.
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Queijeiro, A., Tun, D.M. Composite weak bosons in neutrino-lepton scattering. Z. Phys. C - Particles and Fields 47, 63–67 (1990). https://doi.org/10.1007/BF01551913
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DOI: https://doi.org/10.1007/BF01551913