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HET Brown Bag Seminars | The strong CP problem and UV instantons

Prateek Agrwal (Harvard)
Wednesday, January 17, 2018
12:00-1:00 PM
3481 Randall Laboratory Map
The absence of sizeable CP violation in the strong sector is a long standing puzzle. A class of solutions to this problem rely on a global U(1) symmetry that is anomalous with QCD. These solutions lead to robust low-energy predictions, for example a massless up quark or a light axion. I will present simple extensions to such solutions which can dramatically change these low-energy predictions. In our models, contributions from small instantons play a significant role in affecting the low-energy physics while preserving the solution to the strong CP problem.
Building: Randall Laboratory
Event Type: Workshop / Seminar
Tags: Free, Graduate Students, Lecture, Physics, Science, Talk, Undergraduate Students
Source: Happening @ Michigan from HET Brown Bag Series, Department of Physics