| Speaker: | Kimiko Yamashita (National Tsing Hua University) |
|---|---|
| Title: | Search for Dark Neutrino via Vacuum Magnetic Birefringence Experiment |
| Date (JST): | Wed, Apr 04, 2018, 13:30 - 14:30 |
| Place: | Seminar Room A |
| Related File: | 2063.pdf |
| Abstract: | We consider a dark sector model where a dark fermion couples to photons via an extra U(1) mediator and can couple to the mediator with parity violation. We derived a low energy effective Lagrangian including a parity violated term for light-by-light scattering by integrating out the dark fermion. Our focus lies on Vacuum Magnetic Birefringence Experiment to probe the dark sector. We propose the ring resonator (3-4 mirrors) with an appropriate polarization state of light in stead of a usual Fabry-Perot resonator (2 mirrors) with a conventional polarization state of light to measure the Parity violated term. We assume that a dark neutrino is a dark fermion, i.e. V-A current, and give constraints on model parameters from a current experimental limit. PTEP 2017 no. 12, 123B03 (2017) (arXiv:1707.03308 [hep-ph]), arXiv:1707.03609 [hep-ph] |
