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SUMMARY:Hadronic contribution to the muon anomalous magnetic moment from l
 attice QCD - Bipasha Chakraborty (University of Glasgow)
DTSTART:20151113T160000Z
DTEND:20151113T170000Z
UID:TALK62124@talks.cam.ac.uk
CONTACT:Marco Nardecchia
DESCRIPTION:The anomalous magnetic moment of the muon\, defined as the fra
 ctional difference of its gyromagnetic ratio from the naive value of 2\, h
 as been measured with an impressive accuracy of 0.54 parts per million in 
 experiment (BNL E821)\, thus providing one of the most stringent tests of 
 the Standard Model. Intriguingly\, the experimentally measured anomaly dis
 agrees by around 3 standard deviations with the calculated value from the 
 Standard Model. The current theoretical uncertainty is dominated by that f
 rom the calculation of the lowest order “hadronic vacuum polarisation (H
 VP)”. Improvements in the experimental uncertainty by a factor of 4 in t
 he upcoming experiment at Fermilab (E989) are expected and improvements in
  the theoretical determination would make the discrepancy (if it remains) 
 really compelling in trying to ascertain the possibility of new physics be
 yond the Standard Model. I will report on the progress and plans for impro
 ving the theoretical calculation of the HVP contribution to the anomaly us
 ing our (HPQCD) new lattice QCD method.
LOCATION:B1.39\, DAMTP
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