CP violation from several angles
Henrique Brito Câmara
Departamento de Física and Centro de Física Teórica de Partículas (CFTP), Instituto Superior Técnico (IST), Universidade de Lisboa
Abstract:
In this seminar I will discuss CP violation from several angles:
i)- The spontaneous origin of CP violation from the complex vacuum expectation value of a scalar singlet. I will show its relevance for leptogenesis and leptonic CP violation in neutrino oscillations (JHEP 01 (2023) 010), as well as, its key role at addressing the strong CP problem via the Nelson-Barr mechanism (Phys.Rev.D 108 (2023) 9, 095003).
ii)- The dynamical axion solution to the strong CP problem. Namely, I will discuss a DFSZ axion model extended with two right-handed neutrinos (νDFSZ) supplemented with flavored Peccei-Quinn symmetries (arXiv:2504.00088 [hep-ph]). In this νDFSZ scheme we systematically determine the simplest quark and lepton flavor patterns compatible with masses, mixing and CP violation data, discuss axion dark matter production in pre and post-inflationary cosmology, and determine the predictions for the axion couplings to photons and fermions.
Seminar takes place on Tuesday, November 4th 2025 at 2:00 PM
in the IEAP meeting room, Praha 1, Husova 240/5.
| Ing. Bartoloměj Biskup, Ph.D. seminar chair |
doc. Ing. Ivan Štekl, CSc. director of IEAP |
doc. Dr. André Sopczak IEEE CS - NPSS chair |
NUCLEAR & PLASMA SCIENCES SOCIETY CHAPTER
IEEE Czechoslovakia section
https://www.ieee.cz/main/section/nps/