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arXiv · 1308.4837

Optimal one-parameter observables for $Z'$ searches in $e^+e^- \to \mu^+\mu^-$ process

Alexey Gulov
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Abstract

To detect off-shell Abelian $Z'$ boson in $e^+e^-\to\mu^+\mu^-$, we propose one-parameter observables with the best value-to-uncertainty ratio. The observables are constructed by angular integration of the differential cross section with smooth weight functions. The value-to-uncertainty ratio is used as a criterion to select the unique weight function leading to the observable with the best statistical power for data analysis. The observables allow to select either vector or axial-vector $Z'$ couplings to leptons. The obtained observable can be useful in future experiments at lepton colliders such as the ILC.

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Alexey Gulov. 2013-08-22. Optimal one-parameter observables for $Z'$ searches in $e^+e^- \to \mu^+\mu^-$ process. https://doi.org/10.1142/s0217751x14501619

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