Probing the ${\nu }_R$-philic $Z^{\prime }$ at DUNE near detectors

Abstract

We consider a hidden $U(1)$ gauge symmetry under which only the right-handed neutrinos (${\nu }_R$) are charged. The corresponding gauge boson is referred to as the ${\nu }_R$-philic $Z^{\prime }$. Despite the absence of direct gauge couplings to ordinary matter at tree level, loop-induced couplings of the ${\nu }_R$-philic $Z^{\prime }$ via left-right neutrino mixing can be responsible for its experimental accessibility. An important feature of the ${\nu }_R$-philic $Z^{\prime }$ is that its couplings to neutrinos are generally much larger than its couplings to charged leptons and quarks, thus providing a particularly interesting scenario for future neutrino experiments such as DUNE to probe. We consider two approaches to probe the ${\nu }_R$-philic $Z^{\prime }$ at DUNE near detectors via (i) searching for $Z^{\prime }$ decay signals, and (ii) precision measurement of elastic neutrino-electron scattering mediated by the $Z^{\prime }$ boson. We show that the former will have sensitivity comparable to or better than previous beam dump experiments, while the latter will improve current limits substantially for large neutrino couplings.

21 pages, 6 figures; version published in Phys. Lett. B

References in corpus (8)

• Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm
• Observation of Coherent Elastic Neutrino-Nucleus Scattering
• New Fixed-Target Experiments to Search for Dark Gauge Forces
• New Limits on Hidden Photons from Past Electron Beam Dumps
• Light dark matter in neutrino beams: production modelling and scattering signatures at MiniBooNE, T2K and SHiP
• Accelerator Neutrino Beams
• Neutrinophilic Non-Standard Interactions
• Neutrino-electron elastic scattering for flux determination at the DUNE oscillation experiment

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• Prospects of five-dimensional $L_{\mu }-L_{\tau }$ gauge interactions in the light of elastic neutrino-electron scatterings: The scope of the DUNE near detector