Calculation of the Hadronic Vacuum Polarization Disconnected Contribution to the Muon Anomalous Magnetic Moment
| Autor: | Andreas Jüttner, Marina Marinkovic, M. Spraggs, Tom Blum, Luchang Jin, Antonin Portelli, Christoph Lehner, Taku Izubuchi, Peter Boyle, K. Maltman |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Quantum chromodynamics
Physics Particle physics Muon Anomalous magnetic dipole moment 010308 nuclear & particles physics High Energy Physics::Lattice Hadron Lattice field theory High Energy Physics - Lattice (hep-lat) General Physics and Astronomy FOS: Physical sciences Particle Physics - Lattice Lattice QCD 01 natural sciences Nuclear physics High Energy Physics - Phenomenology High Energy Physics - Lattice Pion High Energy Physics - Phenomenology (hep-ph) 0103 physical sciences High Energy Physics::Experiment Vacuum polarization 010306 general physics Particle Physics - Phenomenology |
| Zdroj: | Blum, T, Boyle, P A, Izubuchi, T, Jin, L, Jüttner, A, Lehner, C, Maltman, K, Marinkovic, M, Portelli, A & Spraggs, M 2016, ' Calculation of the Hadronic Vacuum Polarization Disconnected Contribution to the Muon Anomalous Magnetic Moment ', Physical Review Letters, vol. 116, no. 23, 232002 . https://doi.org/10.1103/PhysRevLett.116.232002 |
| Popis: | We report the first lattice QCD calculation of the hadronic vacuum polarization disconnected contribution to the muon anomalous magnetic moment at physical pion mass. The calculation uses a refined noise-reduction technique which enabled the control of statistical uncertainties at the desired level with modest computational effort. Measurements were performed on the $48^3 \times 96$ physical-pion-mass lattice generated by the RBC and UKQCD collaborations. We find $a_\mu^{\rm HVP~(LO)~DISC} = -9.6(3.3)(2.3)\times 10^{-10}$, where the first error is statistical and the second systematic. Comment: 8 pages, 13 figures |
| Databáze: | OpenAIRE |
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