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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:3
UID:UW-Physics-Event-4851
DTSTART:20181012T203000Z
DURATION:PT1H0M0S
DTSTAMP:20260313T142447Z
LAST-MODIFIED:20180924T202155Z
LOCATION:2241 Chamberlin Hall
SUMMARY:A tabletop-scale probe for TeV physics: the electric dipole mo
 ment of the electron\, Physics Department Colloquium\, David DeMille\,
  Yale
DESCRIPTION:Time-reversal (T) symmetry is observed to be broken in K- 
 and B-meson systems\, in a manner consistent with the Standard Model (
 SM) of electroweak interactions. Violation of T-invariance makes it po
 ssible for elementary particles such as the electron to have an electr
 ic dipole moment (EDM) along their spin axis.  Although the SM predict
 ion for the electron EDM is too small to detect\, extensions to the SM
  frequently predict EDMs within a few orders of magnitude of the curre
 nt limits.  I will describe our ACME experiment\, which uses methods o
 f atomic and molecular physics to detect the electron’s EDM.  We rec
 ently completed the most sensitive search for this quantity\, finding 
 a result consistent with zero but setting a limit an order of magnitud
 e smaller than previous work.  Remarkably\, the result of this tableto
 p-scale experiment sets strong constraints on the existence of T-viola
 ting phenomena well above the TeV scale being probed at the Large Hadr
 on Collider\, and has a substantial impact on theories of physics beyo
 nd the Standard Model.
URL:https://www.physics.wisc.edu/events/?id=4851
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