Akademik Veri Yönetim Sistemi
Beyond Standard Model: From Theory to Experiment (BSM- 2023), Al-Ghardaqah, Mısır, 6 - 09 Kasım 2023, ss.1-7
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.
Acknowledgement: This work was supported by the Scientific and Technological Research Council of Turkey (TUBITAK) under Project 123F186.
Keywords: CE$\nu$NS, Beyond Standard Model, solar neutrinos, neutrino magnetic moment