Speaker
Description
The recently observed coherent elastic neutrino-nucleus scattering (CE$\nu$NS) opens novel
perspectives on the standard model (SM) and beyond the SM (BSM) physics. This framework helps
in understanding neutrino interaction with matter as well as gives insight into the direct detection of
dark matter (DM). In this framework, we investigate an additional massive $Z'$ vector boson
associated with a new $U(1)'$ gauge symmetry. Accordingly, we consider the $U(1)_{B-L}$,
$U(1)_{B-3L_e}$, $U(1)_{B-3L\mu}$, and $U(1)_{B-3L\tau}$ models. These models are
anomaly-free and play a role as a possible explanation of neutrino mass. They differ in the charges
of the fermions, which determine their contributions to CE$\nu$NS of the interactions mediated by
the $Z'$ vector boson. These contributions add coherently to the SM weak neutral current
interactions which are mediated by the $Z$ vector boson. The effects are quantified by additional
terms in the weak charge of the nucleus. We study these models by utilizing the recent CDEX-10
result of the neutrino-nucleus scattering process. The experiment observes solar neutrino using
germanium target with 205.4 kg day exposure. The analysis of the data provides new bounds for the
mass and coupling of the new vector boson depending on the charges of neutrinos and quarks in
each model under consideration. We observe that our results may improve the current bounds
obtained from previous studies on these models.
