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arXiv 2008.05022hep-ph
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通过COHERENT相干弹性中微子核散射数据对光矢量介质的约束

Constraints on light vector mediators through coherent elastic neutrino nucleus scattering data from COHERENT

M. Cadeddu, N. Cargioli, F. Dordei, C. Giunti, Y. F. Li, E. Picciau, Y. Y. Zhang

备注：
12 pages, 5 figures, matches journal version
发表信息：
JHEP 01 (2021) 116
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摘要：

我们提出了新的约束三种不同的模型，所谓的通用，$B-L$和$L_μ-L_τ$模型，涉及尚未观察到的光矢量$Z'$调解人，利用最近的观察相干弹性中微子核散射（CE $ν$ NS）在氩和铯碘化的COHERENT合作。我们比较了从上述数据集的组合得到的结果与来自搜索的限制在固定目标，加速器，太阳中微子和反应堆CE $ν$ NS实验，并与参数区域，可以解释的异常磁矩的μ子。我们发现，对于通用和$B-L$模型，相干数据使我们能够把严格的限制在光矢量介质质量，$M_{Z'}$，耦合，$g_{Z'}$，参数空间。

英文摘要：

We present new constraints on three different models, the so-called universal, $B-L$ and $L_μ-L_τ$ models, involving a yet to be observed light vector $Z'$ mediator, by exploiting the recent observation of coherent elastic neutrino-nucleus scattering (CE$ν$NS) in argon and cesium-iodide performed by the COHERENT Collaboration. We compare the results obtained from a combination of the above data sets with the limits derived from searches in fixed target, accelerator, solar neutrino and reactor CE$ν$NS experiments, and with the parameter region that could explain the anomalous magnetic moment of the muon. We show that for the universal and the $B-L$ models, the COHERENT data allow us to put stringent limits in the light vector mediator mass, $M_{Z'}$, and coupling, $g_{Z'}$, parameter space.

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