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BEGIN:VEVENT
DTSTAMP:20260919T170741Z
LAST-MODIFIED:20181119T165814Z
DTSTART:20181120T160000Z
DTEND:20181120T170000Z
UID:event2029@bu.edu
URL:http://physics.bu.edu/internal/events/show/2029
SUMMARY:New constraints on bad gauge symmetries
DESCRIPTION:Featuring Jeff Dror\, Berkeley/LBL\n\nPart of the HET Seminar S
	eries.\n\nNew light vectors with dimension-4 couplings to Standard Model st
	ates have (energy / vector mass)^2 enhanced production rates unless the cur
	rent they couple to is conserved. In this talk I will discuss the consequen
	ces of gauging (almost) any such current considering vectors coupled to ano
	malous currents\, fermionic currents\, and bosonic currents. Looking for en
	ergy-enhanced processes\, I will derive new constraints on the couplings of
	 such vectors\, that are significantly stronger than the previous literatur
	e for a wide variety of models. The new limits arise from a range of proces
	ses\, including rare Z decays and flavor changing meson decays\, and rule o
	ut a number of phenomenologically-motivated proposals.
LOCATION:PRB 595\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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