Speaker
Henrique Brito Câmara
(CFTP/IST, U. Lisboa)
Description
I will discuss our recent paper Phys.Rev.Lett. 132 (2024) 5, 051801, where we propose a generalized KSVZ-type axion framework in which coloured fermions and scalars act as two-loop Majorana neutrino-mass mediators. The global Peccei-Quinn symmetry under which exotic fermions are charged solves the strong CP problem. Within our general proposal, various setups can be distinguished by probing the axion-to-photon coupling at helioscopes and haloscopes. We also comment on axion dark-matter production in the early Universe.
Authors
Aditya Batra
(CFTP/IST, U. Lisboa)
Henrique Brito Câmara
(CFTP/IST, U. Lisboa)
Filipe Rafael Joaquim
(CFTP/IST, U. Lisboa)
Rahul Srivastava
(IISER, Bhopal)
José W. F. Valle
(Valencia U., IFIC)