Quasi-sterile neutrinos from dark sectors


Alves, D. (2022). Quasi-sterile neutrinos from dark sectors. Perimeter Institute. https://pirsa.org/22030108


Alves, Daniele. Quasi-sterile neutrinos from dark sectors. Perimeter Institute, Mar. 15, 2022, https://pirsa.org/22030108


          @misc{ pirsa_22030108,
            doi = {},
            url = {https://pirsa.org/22030108},
            author = {Alves, Daniele},
            keywords = {Particle Physics},
            language = {en},
            title = {Quasi-sterile neutrinos from dark sectors},
            publisher = {Perimeter Institute},
            year = {2022},
            month = {mar},
            note = {PIRSA:22030108 see, \url{https://pirsa.org}}


Quasi-sterile neutrinos are a natural consequence of dark sectors interacting with the Standard Model (SM) sector via neutrino- and vector-portals. Essentially, quasi-sterile neutrinos are light dark sector fermions with two generic properties: (i) they mix with the active neutrinos of the SM, and (ii) they are charged under a vector mediator that couples feebly to SM matter. Various interesting phenomenological consequences result from this class of particles. In this talk, I will discuss one such consequence: new, beyond the SM matter effects that can alter in-medium neutrino oscillations. In particular, for special windows of energy and matter densities, active neutrinos can resonantly oscillate into sterile neutrinos. I will discuss how this feature could be exploited to build a quasi-sterile neutrino model that can explain the MiniBooNE and LSND anomalies, while remaining compatible with observations from long-baseline reactor- and accelerator-based neutrino experiments. I will also discuss the implications to this model from the recent MicroBooNE results, and, time permitting, from solar neutrino measurements.

Zoom Link: https://pitp.zoom.us/j/95362454210?pwd=RzNCeDRkMjJXb2xNbHNkcEc1ZTdkUT09