PIRSA:23040070

Video URL

http://pirsa.org/23040070

MeV Sterile Neutrinos in Light of the Cabibbo-Angle Anomaly

Tobioka, K. (2023). MeV Sterile Neutrinos in Light of the Cabibbo-Angle Anomaly. Perimeter Institute for Theoretical Physics. http://pirsa.org/23040070

Tobioka, Kohsaku. MeV Sterile Neutrinos in Light of the Cabibbo-Angle Anomaly. Perimeter Institute for Theoretical Physics, Apr. 25, 2023, http://pirsa.org/23040070 

          @misc{ scivideos_PIRSA:23040070,
            doi = {},
            url = {http://pirsa.org/23040070},
            author = {Tobioka, Kohsaku},
            keywords = {Particle Physics},
            language = {en},
            title = {MeV Sterile Neutrinos in Light of the Cabibbo-Angle Anomaly},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2023},
            month = {apr},
            note = {PIRSA:23040070 see, \url{https://scivideos.org/PIRSA/23040070}}
          }

Kohsaku Tobioka Florida State University

Source Repository PIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

The mixing angles of the quark sectors are constrained by unitarity in the standard model. However, recent data indicates a about 3 sigma deviation from unitarity in the mixing angle between the 1st and 2nd generation down-type quarks, known as the Cabibbo angle anomaly. The observations include the charged-current weak decays of neutrons, nuclei, kaons, and the hadronic decay of tau leptons. Although the issue appears to lie in the quark sector, modifying the neutrino sector may offer a solution. In this talk, we discuss recent findings that suggest a sterile neutrino of MeV mass mixing with the electron-type neutrino can resolve the Cabibbo angle anomaly. We also examine the current bounds and future prospects of this scenario.

Zoom Link:  https://pitp.zoom.us/j/98083942792?pwd=eHFRUmJUVGNJcVpTSHZXVXFKQm95QT09