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Physics Department Colloquium
The seemingly-anomalous magnetic moment of the muon - a novel reconciliation with the Standard Model and connection with Dark Matter
Date: Friday, October 28th
Time: 3:30 pm
Place: 2241 Chamberlin Hall
Speaker: Glennys Farrar, NYU
Abstract: Precision measurement of the magnetic moment of the muon yields a result 4.2 sigma above the prediction of the Standard Model. At the same time, the lattice QCD calculation of the “hadronic vacuum 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 discrepancies can be explained, quite naturally, by production of unseen final states in e+e- -> hadrons. Such so-far-undiscovered hadrons have to be neutral and long-lived to have escaped detection, and in fact could be the Dark Matter particle. I will discuss tests of this proposal.
Host: Lu Lu
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