HET Lunch Discussions

"Lattice QCD Study of Exclusive Channels in the Muon HVP"

Presented by Aaron Meyer, BNL

Friday, August 17, 2018, 12:15 pm — Building 510, Room 2-160

The hadronic vacuum polarization is a dominant contribution to the theoretical uncertainty of the muon anomalous magnetic moment. Both the R-ratio and Lattice QCD may be used to compute the HVP contribution from theory, and the theoretical uncertainties for both methods are statistically precise in regions that are complimentary to each other. For lattice QCD, the long-distance region dominates the statistical uncertainty. By explicitly studying exclusive channels of the HVP diagram with lattice QCD, it is possible to reconstruct the long-distance behavior of the correlation function. This has the effect of replacing the statistical uncertainty with a significantly smaller systematic uncertainty. With this long-distance reconstruction, it will be possible to achieve a precision with a lattice-only calculation similar to that of the R-ratio method.

Hosted by: Christoph Lehner

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