2023
06/27
OPEN
Date
2023/06/27(Tue.) 11:00～12:00
Venue
Online (Zoom)
Speaker
Dr. Michiru Niibo(Ochanomizu University)
Language
English
URL
Contact
Yu Hamada/yuhamada-AT-post.kek.jp
Overview
Majorons are (pseudo-)Nambu-Goldstone bosons associated with lepton number symmetry breaking due to the Majorana mass term of neutrinos introduced in the seesaw mechanism. They are good dark matter candidates since their lifetime is suppressed by the lepton number breaking scale. We update constraints and discuss future prospects on majoron dark matter in the singlet majoron models based on neutrino, gamma-ray, and cosmic-ray telescopes in the mass region of MeV-10 TeV.