Chakraborty, B. et al. (2018) Strong-isospin-breaking correction to the muon anomalous magnetic moment from lattice QCD at the physical point. Physical Review Letters, 120(15), 152001. (doi: 10.1103/PhysRevLett.120.152001)
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Abstract
All lattice-QCD calculations of the hadronic-vacuum-polarization contribution to the muon’s anomalous magnetic moment to date have been performed with degenerate up- and down-quark masses. Here we calculate directly the strong-isospin-breaking correction to aHVP μ for the first time with physical values of mu and md and dynamical u, d, s, and c quarks, thereby removing this important source of systematic uncertainty. We obtain a relative shift to be applied to lattice-QCD results obtained with degenerate light-quark masses of δaHVP;mu≠md μ ¼ þ1.5ð7Þ%, in agreement with estimates from phenomenology
| Item Type: | Articles |
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| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Hatton, Dr Daniel and Koponen, Dr Jonna and DeTar, Professor Carleton and Davies, Professor Christine |
| Authors: | Chakraborty, B., Davies, C.T.H., DeTar, C., El-Khadra, A.X., Gámiz, E., Gottlieb, S., Hatton, D., Koponen, J., Kronfeld, A.S., Laiho, J., Lepage, G.P., Liu, Y., Mackenzie, P.B., McNeile, C., Neil, E.T., Simone, J.N., Sugar, R., Toussaint, D., Van de Water, R.S., and Vaquero, A. |
| College/School: | College of Science and Engineering > School of Physics and Astronomy |
| Journal Name: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| ISSN (Online): | 1079-7114 |
| Published Online: | 12 April 2018 |
| Copyright Holders: | Copyright © 2018 The American Physical Society |
| First Published: | First published in Physical Review Letters 120(15):152001 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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