16th Patras Workshop on Axions, WIMPs and WISPs

Session

Session 19

Jun 18, 2021, 4:30 PM

Online Workshop

Conveners

Session 19

• Joerg Jaeckel

24. Axion Quasiparticles for Axion Dark Matter Detection

David Marsh (King's College London)

6/18/21, 4:30 PM

It has been suggested that certain antiferromagnetic topological insulators contain axion quasiparticles (AQs), and that such materials could be used to detect axion dark matter (DM). I review recent progress in this direction. I begin by clarifying the effective theory, and introducing a model for material losses. Current progress on measurement of material candidates is discussed. The...

26. Photophilic hadronic axion from heavy magnetic monopoles

Anton Sokolov (DESY)

6/18/21, 4:55 PM

We propose a model for the QCD axion which is realized through a coupling of the Peccei-Quinn scalar field to magnetically charged fermions at high energies. We show that the axion of this model solves the strong CP problem and then integrate out heavy magnetic monopoles using the Schwinger proper time method. We find that the model discussed yields axion couplings to the Standard Model which...

37. Catching the axion via new CP-violating forces

Luca Di Luzio (Istituto Nazionale di Fisica Nucleare)

6/18/21, 5:15 PM

While the axion was originally introduced to "wash out" CP violation from strong interactions, new sources of CP violation beyond QCD (needed e.g. for the matter-antimatter asymmetry) might manifest themselves via a tiny scalar axion-nucleon component. The latter can be experimentally probed in axion-mediated force experiments, as suggested long ago by J.E. Moody and F. Wilczek. In the present...

164. Results of axion searches at 34 μeV with RADES haloscope and prospects for searches in BabyIaxo

Sergio Arguedas Cuendis

6/18/21, 5:35 PM