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arXiv · 1811.10377

$Z$-boson polarization as a model-discrimination analyzer

Seong Youl Choi
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Abstract

Determining the spin of any new particle is critical in identifying the true theory among various extensions of the Standard Model (SM). The degree of $Z$-boson polarization in any two-body decay process $A\to B Z$ is sensitive to the spin assignments of two new particles $A$ and $B$. Considering all possible spin-0, 1/2 and 1 combinations in a renormalizable field theory, we demonstrate that $Z$-boson polarization can indeed play a role of a decisive and universal analyzer in distinguishing the different spin assignments.

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Seong Youl Choi. 2018-11-26. $Z$-boson polarization as a model-discrimination analyzer. https://doi.org/10.1103/physrevd.98.115037

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