We have witnessed the beginning of an era where dark matter and neutrino detectors can probe similar new physics phenomena. Motivated by the low-energy electron recoil spectrum observed by the dark matter experiment, XENON1T, at Gran Sasso laboratory, we interpret the observed signal not in terms of a dark matter particle, but rather in the context of a new light Z′ gauge boson. We discuss how such a light Z′ rises in a Two Higgs Doublet Model augmented by an abelian gauge symmetry where neutrino masses and the flavor problem are addressed, in agreement with neutrino-electron scattering data.
@article{arxiv.2006.14590,
title = {XENON1T Anomaly: A Light $Z^\prime$},
author = {Manfred Lindner and Yann Mambrini and Tessio B. de Melo and Farinaldo S. Queiroz},
journal= {arXiv preprint arXiv:2006.14590},
year = {2020}
}