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arXiv · 1701.01753

Search for Low-mass Dark-Sector Gauge Boson with the BABAR Detector

Romulus Godang
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Abstract

We report searches for a new muonic dark force mediated by a gauge boson ($Z'$) coupling only to the second and third lepton families. The existence of the $Z'$ boson is probed in $e^+e^- \to \mu^+\mu^- Z'$, $Z' \to \mu^+ \mu^-$ events, with an analysis based on the full data sample collected with the BABAR detector at the PEP-II $e^+e^-$ collider. No significant signal is observed. Limits on dark-sector coupling constants are derived; these improve upon current bounds, and further constrain the allowed parameter space.

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Romulus Godang. 2017-01-06. Search for Low-mass Dark-Sector Gauge Boson with the BABAR Detector. https://arxiv.org/abs/1701.01753

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