Dominguez, C. A. and Schilcher, K. and Spiesberger, H. (2017) QCD determination of the leading order hadronic contribution to the muon g − 2. Il nuovo cimento C, 40 (5). pp. 1-9. ISSN 1826-9885
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Abstract
The leading order hadronic contribution to the muon magnetic moment anomaly, aHAD μ, is determined entirely in the framework of QCD. The result in the light-quark sector, in units of 10−10, is aHAD μ |uds = 686 ± 26, and in the heavy-quark sector aHAD μ |c = 14.4 ± 0.1, and aHAD μ |b = 0.29 ± 0.01, resulting in aHAD μ = 701 ± 26. The main uncertainty is due to the current lattice QCD value of the first and second derivative of the electromagnetic current correlator at the origin. The expected improvement in the precision of these derivatives may render this approach the most accurate and trustworthy determination of the leading order aHAD μ.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 17 Nov 2020 10:22 |
| Last Modified: | 17 Nov 2020 10:22 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/20020 |
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