Leading-order hadronic contribution to g-2 from lattice QCD
Conference
·
OSTI ID:1023439
We calculate the leading-order hadronic correction to the anomalous magnetic moments of each of the three charged leptons in the Standard Model: the electron, muon and tau. Working in two-flavor lattice QCD, we address essentially all sources of systematic error: lattice artifacts, finite-size effects, quark-mass extrapolation, momentum extrapolation and disconnected diagrams. The only remaining significant systematic error, the exclusion of the strange and charm quark contributions, will be addressed in our four-flavor calculation. We achieve a statistical accuracy of 2% or better for the physical values for each of the three leptons and the systematic errors are at most comparable.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1023439
- Report Number(s):
- JLAB-THY-11-1323; DOE/OR/23177-1472; TRN: US1104543
- Resource Relation:
- Conference: ICHEP 2010, 22-28 July 2010, Paris, France
- Country of Publication:
- United States
- Language:
- English
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