Prospects of five-dimensional $L_{\hat{I}}¼-L_{\ddot{I}}„$ gauge interactions in the light of elastic neutrino-electron scatterings: The scope of the DUNE near detector

Abstract

We discuss the future prospects of a minimally five-dimensional version of the well-motivated scenario for addressing the discrepancy in the muon anomalous magnetic moment, the $U(1{)}_{L_{\hat{I}}¼-L_{\ddot{I}}„}$ extension of the standard model (SM) gauge symmetry. Here, multiple associated massive gauge bosons appear thanks to the five-dimensional $U(1{)}_{L_{\hat{I}}¼-L_{\ddot{I}}„}$ gauge symmetry, and they contribute to the muon $(g-2)$ and also other processes. We focus on the powerful probe of elastic neutrino-electron scatterings since the upcoming DUNE experiment will explore MeV-scale uncharted regions by previous experiments (e.g., CHARM-II and Borexino) in the near future. We found that even with small kinetic mixing parameters, much of the parameter space, including those satisfying muon $(g-2)$, can be probed using several years of data from the DUNE experiment, focusing on the near detector. In our scenario, interference effects between intermediate-state gauge bosons play an important role. Our results include comparisons between flat and warped extra dimensions.

43 pages, 11 figures, minor revision from v1, version published by Phys. Rev. D

Cited by in corpus (2)

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