BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:UW-Madison-Physics-Events BEGIN:VEVENT SEQUENCE:0 UID:UW-Physics-Event-8169 DTSTART:20230130T170000Z DTEND:20230130T180000Z DTSTAMP:20260414T054137Z LAST-MODIFIED:20230124T181950Z LOCATION:5310 Chamberlin Hall SUMMARY:Where is All the Antimatter? Electron EDM Search in Cold Molec ules Edges Closer\, Atomic Physics Seminar\, Xing Wu\, Harvard Univers ity DESCRIPTION:The Standard Model of particle physics accurately describe s all fundamental particles discovered so far. However\, it is unable to address two great mysteries in physics\, the nature of dark matter and why matter dominates over antimatter throughout the Universe. Nove l theories beyond the Standard Model\, such as models that incorporate supersymmetry\, may explain these phenomena. These models predict ver y massive particles whose interactions violate time-reversal (T) symme try and would give rise to an electric dipole moment (EDM) along the e lectron’s spin. Thus\, searching for EDM provides a powerful probe t o these new physics and sheds light on the mystery of the matter-antim atter asymmetry of the Universe.
\nHere\, I share with you the exc iting journey of the ACME electron EDM search that has set the recent best limit on the value of electron EDM\, measured by spin precession in a superposition of quantum states in cold molecules. This result se verely constrains T-violating new physics in 330 TeV energy range\, exceeding what can be reached at the Large Hadron Collider. New upgra des employing various quantum control and AMO techniques are now under way\, projecting over an order of magnitude sensitivity enhancement ff or the next EDM search.
\n URL:https://www.physics.wisc.edu/events/?id=8169 END:VEVENT END:VCALENDAR