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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-7812
DTSTART:20221028T203000Z
DTEND:20221028T230000Z
DTSTAMP:20260414T154346Z
LAST-MODIFIED:20221020T133515Z
LOCATION:2241 Chamberlin Hall
SUMMARY:The seemingly-anomalous magnetic moment of the muon - a novel 
 reconciliation with the Standard Model and connection with Dark Matter
 \, Physics Department Colloquium\, Glennys Farrar\, NYU
DESCRIPTION:Precision measurement of the magnetic moment of the muon y
 ields a result 4.2 sigma above the prediction of the Standard Model.  
 At the same time\, the lattice QCD calculation of the “hadronic vacu
 um polarization” — essentially\, a weighted integral of the cross 
 section for e+e- -> hadrons — disagrees with the direct experimental
  measurement at a similar level.  I will propose that both discrepanci
 es can be explained\, quite naturally\, by production of unseen final 
 states in e+e- -> hadrons.  Such so-far-undiscovered hadrons have to b
 e neutral and long-lived to have escaped detection\, and in fact could
  be the Dark Matter particle.  I will discuss tests of this proposal. 
  
URL:https://www.physics.wisc.edu/events/?id=7812
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