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VERSION:2.0
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BEGIN:VEVENT
DTSTAMP:20260919T231300Z
LAST-MODIFIED:20180126T200347Z
DTSTART:20180131T210000Z
DTEND:20180131T220000Z
UID:event1915@bu.edu
URL:http://physics.bu.edu/internal/events/show/1915
SUMMARY:"The strong CP problem and UV instantons"
DESCRIPTION:Featuring Prateek Agrawal\, Harvard University\n\nPart of the H
	ET Seminar Series.\n\nThe absence of sizeable CP violation in the strong se
	ctor is a long standing puzzle. A class of solutions to this problem rely o
	n a global U(1) symmetry that is anomalous with QCD. These solutions lead t
	o robust low-energy predictions\, for example a massless up quark or a ligh
	t axion. I will present simple extensions to such solutions which can drama
	tically change these low-energy predictions. In our models\, contributions 
	from small instantons play a significant role in affecting the low-energy p
	hysics while preserving the solution to the strong CP problem.
LOCATION:PRB 595\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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