Solving the Strong CP Problem Without an Axion

Explore a high-energy physics seminar presentation where UC Berkeley's Claudio Andrea Manzari delves into novel solutions for the strong CP problem without utilizing axions. Learn about two innovative constructions that explain the minimal size of the strong CP angle: a parity-based model exchanging the Standard Model with its mirror copy, and a 3 Higgs doublet model with U(1) global flavor symmetry. Discover how these models introduce new mass scales, handle symmetry breaking, and potentially connect to other particle physics mysteries. Understand the implications of parity and charge-conjugation symmetries at short distances, the role of spontaneous symmetry breaking, and the phenomenological aspects of these theoretical frameworks.