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DTSTAMP:20260918T121012Z
LAST-MODIFIED:20150917T190215Z
DTSTART:20150923T193000Z
DTEND:20150923T203000Z
UID:event1475@bu.edu
URL:http://physics.bu.edu/internal/events/show/1475
SUMMARY: Nelson-Barr-ogenesis
DESCRIPTION:Featuring Daniel Egana-Ugrinovic \, Rutgers\n\nPart of the HET 
	Seminar Series.\n\nWe present a supersymmetric model in which the origin of
	 all CP violation and flavor mixing is contained in the setup of an SU(5) u
	nified Nelson-Barr mechanism\, which solves the strong CP problem. The scal
	e of spontaneous CP breaking is taken to be larger than the right handed (R
	H) neutrino masses to allow for thermal leptogenesis. Supersymmetry protect
	s the strong CP phase from dangerous contributions induced by the large CP 
	breaking scale. The low energy theory is a supersymmetric type I seesaw mod
	el\, with all flavor mixing and CP violating effects contained in a wave fu
	nction renormalization matrix. The model is able to accommodate the measure
	d neutrino mass splittings and mixing angles. The model gives as an output 
	the CP violating phases in the PMNS matrix\, a normal neutrino mass hierarc
	hy and the lightest neutrino mass to be around $10^{-2}−10^{−3}$ eV . T
	he observed baryon asymmetry is obtained through thermal leptogenesis for a
	 RH neutrino mass $M_1 \gtrsm 10^{11} GeV$ . Numerical calculations are con
	siderably simplified by making use of flavor invariants.
LOCATION:PRB 595\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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