Calculation of the Hadronic Vacuum Polarization Disconnected Contribution to the Muon Anomalous Magnetic Moment

T Blum; P A Boyle; T Izubuchi; L Jin; A Jüttner; C Lehner; K Maltman; M Marinkovic; A Portelli; M Spraggs; RBC and UKQCD Collaborations

doi:10.1103/PhysRevLett.116.232002

Calculation of the Hadronic Vacuum Polarization Disconnected Contribution to the Muon Anomalous Magnetic Moment

Phys Rev Lett. 2016 Jun 10;116(23):232002. doi: 10.1103/PhysRevLett.116.232002. Epub 2016 Jun 8.

Authors

T Blum¹, P A Boyle², T Izubuchi^{3

4}, L Jin⁵, A Jüttner⁶, C Lehner³, K Maltman^{7

8}, M Marinkovic⁹, A Portelli^{2

6}, M Spraggs⁶; RBC and UKQCD Collaborations

Affiliations

¹ Physics Department, University of Connecticut, Storrs, Connecticut 06269-3046, USA.
² SUPA, School of Physics, The University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom.
³ Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA.
⁴ RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973, USA.
⁵ Physics Department, Columbia University, New York, New York 10027, USA.
⁶ School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom.
⁷ Mathematics & Statistics, York University, Toronto, Ontario M3J 1P3, Canada.
⁸ CSSM, University of Adelaide, Adelaide, South Australia 5005, Australia.
⁹ CERN, Physics Department, 1211 Geneva 23, Switzerland.

PMID: 27341226
DOI: 10.1103/PhysRevLett.116.232002

Abstract

We report the first lattice QCD calculation of the hadronic vacuum polarization (HVP) disconnected contribution to the muon anomalous magnetic moment at physical pion mass. The calculation uses a refined noise-reduction technique that enables the control of statistical uncertainties at the desired level with modest computational effort. Measurements were performed on the 48^{3}×96 physical-pion-mass lattice generated by the RBC and UKQCD Collaborations. We find the leading-order hadronic vacuum polarization a_{μ}^{HVP(LO)disc}=-9.6(3.3)(2.3)×10^{-10}, where the first error is statistical and the second systematic.