| Wednesday 24 April 2024 | |
| Events for day: Wednesday 02 December 2020 |
| 11:00 - 12:00 Wednesday Weekly Seminar-skyroom Accelerator probes for the Higgs portal and Millicharged Dark Sectors School PARTICLES AND ACCELERATORS Abstract: High-luminosity fixed target experiments provide impressive sensitivity to new light weakly coupled degrees of freedom. In the first part of this talk, I will discuss the minimal case of a scalar singlet S coupled to the Standard Model through the Higgs portal, that decays visibly to leptons for scalar masses below the dipion threshold. The dataset from the LSND experiment is found to impose the leading constraints within two mass windows between mS ? 100 and 350 MeV. In the second part of the talk, I will introduce potentially the world's most sensitive location to search for millicharged particles in the 10 MeV to 100 GeV mass ran ... 13:30 - 15:00 Weekly Seminar (Online) Gravitational Wave Candidates of LIGO and physical interpretation https://www.skyroom.online/ch/soa/weekly-seminar School ASTRONOMY The analysis of Gravitational Waves (GW) data from the Advanced LIGO provides the mass of each companion of binary black holes as the source of GWs. The observations reveal that the mass of events corresponding to the binary black holes are much larger than the mass of astrophysical black holes. We suggest the Primordial Black Holes (PBHs) as the source of LIGO events. Assuming that 100% of the dark matter is made of PBHs, we estimate the rate at which these objects make binaries, merge and produce GWs as a function of redshift. The gravitational lensing of GWs by PBHs can also enhance the amplitude of the strain. We simulate GWs sourced by ... 14:00 - 15:00 Weekly Webinar Interface Engineering of Magnetic Properties in Heavy-Metal/Ferromagnet Bilayer Devices School NANO SCIENCES Interface Engineering of Magnetic Properties in Heavy-Metal/Ferromagnet Bilayer Devices Abstract: Spin-Orbit Interaction (SOI) is a relativistic effect that is central to describing magnetization dynamics in continuum limit where the focus is on the slow variation of magnetization order parameter. Magneto-Crystalline Anisotropy (MCA), intrinsic Gilbert damping and Dzyaloshinskii-Moriya Interaction (DMI) are some of the most important properties of ferromagnets (FMs) that are responsible for coupling to the crystallographic anisotropy, energy loss and noncollinear ground state spin texture, respectively. SO ... |