2 papers
hep-ph2024
Domain walls in Nelson-Barr axion model
Kai Murai, Kazunori Nakayama
We explore a concrete realization of a Nelson-Barr model addressing the strong CP problem with suppressed unfavorable corrections. This model has a scalar field that spontaneously…
hep-ph2024
Revisiting the Minimal Nelson-Barr Model
Kai Murai, Kazunori Nakayama
We revisit the minimal Nelson-Barr model for solving the strong CP problem through the idea of spontaneous CP breaking. The minimal model suffers from the quality problem, which me…