Non-decoupling Effects of Heavy Particles in Triple Gauge Boson Vertices

Abstract

Non-decoupling effects of heavy particles present in beyond-the-standard models are studied for the triple gauge boson vertices $\gamma W^{+}{W}^{-}$ and $Z^0{W}^{+}{W}^{-}$. We show from a general argument that the non-decoupling effects are described by four independent parameters, in comparison with the three parameters $S$, $T$ and $U$ in the oblique corrections. These four parameters of the effective triple gauge boson vertices are computed in two beyond-the-standard models. We also study the relation of the four parameters to the $S$, $T$, $U$ parameters, relying on an operator analysis.

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References in corpus (2)

• The Electroweak Chiral Lagrangian and New Precision Measurements
• Effective Field Theory of Anomalous Gauge-Boson Couplings at High-Energy pp Colliders

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