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arXiv · 2109.08118

COHERENT constraints on $Z'$ in 331$\beta$ model

D. T. Binh·L. T. Hue·V. H. Binh·D. V. Soa·H. N. Long
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Abstract

We investigate coherent-elastic neutrino-nucleus scattering ($CE\nu NS$) in 3-3-1 models for different values of $\beta$ in which $\beta$ is a parameter used to define the charge operator of the 331 models. We show that the number of events predicted by 331$\beta$ model is in agreement with the data given by COHERENT experiment. We evaluate the sensitivity of the mass of Z' boson with 90% confidence level (CL) and find that $m_{Z'}\geq 1.4 $TeV for $\beta=-\sqrt{3}$ with 90% CL. We perform $\chi^2$ fit for liquid Argon, Germanium and NaI detector subsystems, we obtain $m_{Z'} \geq [2,3.1 ]$ TeV with 90\% CL. Our results indicate low-energy high-intensity measurements can provide a valuable probe, complementary to high energy collider searches at LHC and electroweak precision measurements.

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D. T. Binh, L. T. Hue, V. H. Binh, D. V. Soa, H. N. Long. 2021-09-16. COHERENT constraints on $Z'$ in 331$\beta$ model. https://arxiv.org/abs/2109.08118

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