IBS-ICTP Workshop on Axion-Like Particles

Contribution List

6. Storage ring axion-EDM experiment using an RF Wien Filter

On Kim (IBS-CAPP)

27/10/2021, 16:00

A hypothetical particle axion, or axion-like particles, may couple to nucleons to induce an oscillating electric dipole moment (EDM).We propose a novel method of probing the axion-induced oscillating EDM in storage rings, using an RF Wien Filter.The Wien Filter at the frequency of the sidebands of the axion and g-2 frequency generates a spin resonance, as confirmed both by an analytical...

7. The NASDUCK collaboration: using quantum magnetometers to look for ultralight dark matter

Itay Bloch (Tel-Aviv U)

27/10/2021, 17:10

When DM bosons have an ultra-light mass, they can act as a classical, coherent field. In many cases, and specifically in some ALP models, this field has magnetic properties, and it can therefore be measured by quantum magnetometers. The Noble and Alkali Spin Detectors for Ultralight Coherent darK matter (NASDUCK) collaboration, was formed last year in order to measure such DM. Recently, the...

8. Terrestrial Signals from Axion Star Explosions

Joshua Eby (IPMU)

28/10/2021, 16:00

Axions form gravitationally-bound structures called axion stars, which are astrophysical objects with unique observational signatures. When an axion star grows enough in mass, it collapses gravitationally, and in its final moments it emits a large fraction of its mass in relativistic axions; we show that these axions are detectable in current and near-future axion DM experiments. Unlike the...

9. Supernovae as axion factories: the latest developments

Pierluca Carenza (Bari U, INFN)

28/10/2021, 17:10

Feebly interacting particles are copiously produced in extreme astrophysical phenomena. A remarkable example is the production of axions and Axion-Like Particles (ALPs) in Supernovae (SNe). The production of exotic particles in SNe leaves imprints in some astrophysical observables as the duration of the SN neutrino burst or the photon cosmic backround. Thanks to the most recent developments...

10. Axions, Dark Matter, and Primordial Density Perturbations

Takeshi Kobayashi (SISSA)

29/10/2021, 16:00

I will present new ideas about how the QCD axion or axion-like particles can make up the dark matter of our universe, and/or explain the origin of the primordial density perturbation. For axion dark matter, I will introduce a novel production mechanism that invokes a kinetic mixing between the axion and the inflaton. I will show that this mechanism opens up new windows in the axion parameter...

11. Axion-like particles from primordial black holes shining through the Universe

Francesco Schiavone (Bari U)

29/10/2021, 17:10

We consider a cosmological scenario in which the very early Universe experienced a transient epoch of matter domination due to the formation of a large population of primordial black holes (PBHs) with masses M . 109 g, that evaporate before Big Bang nucleosynthesis. In this context, Hawking radiation would be a non-thermal mechanism to produce a cosmic background of axion-like particles...