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SUMMARY:Tightening the screws on the Standard Model: theory predictions fo
 r the anomalous magnetic moment of the muon - Prof. Christine Davies\, Uni
 versity of Glasgow
DTSTART:20220202T141500Z
DTEND:20220202T151500Z
UID:TALK169262@talks.cam.ac.uk
CONTACT:Bipasha Chakraborty
DESCRIPTION:The Muon g-2 experiment (E989) at Fermilab has recently unveil
 ed a new determination of the anomalous magnetic moment of the muon. This 
 has confirmed the tantalising discrepancy (4 sigma) that existed earlier b
 etween experiment and Standard Model expectations\; a larger data sample w
 ill further improve the experimental uncertainties. At the same time the r
 ace is on to improve the theoretical uncertainties from the Standard Model
 . The largest SM uncertainty comes from the hadronic vacuum polarisation (
 HVP) contribution\, currently determined from data-driven approaches. Latt
 ice QCD has a key role to play here in providing an 'ab initio' value for 
 the HVP. Uncertainties from lattice QCD were large initially\, but are now
  close to reaching small enough values to have some impact.\nI will give a
  general background to the theoretical inputs to the SM determination of a
 _mu and then discuss recent lattice QCD results in this area and where thi
 ngs are heading.
LOCATION:Both in-person (at Potter room\, DAMTP) and online (details to be
  sent by email)
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