| Article | |
| Report number | arXiv:2211.17083 ; MITP-22-102 ; DESY-22-193 |
| Title | Intermediate window observable for the hadronic vacuum polarization contribution to the muon $g-2$ from O$(a)$ improved Wilson quarks |
| Author(s) | Cè, Marco (U. Bern, AEC) ; Gérardin, Antoine (Marseille, CPT) ; von Hippel, Georg (U. Mainz, PRISMA) ; Hudspith, Renwick J. (Darmstadt, Tech. Hochsch. ; Darmstadt, GSI) ; Kuberski, Simon (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Meyer, Harvey (U. Mainz, PRISMA ; Helmholtz Inst., Mainz) ; Miura, Kohtaroh (Helmholtz Inst., Mainz ; KEK, Tsukuba) ; Mohler, Daniel (Darmstadt, Tech. Hochsch. ; Darmstadt, GSI) ; Ottnad, Konstantin (U. Mainz, PRISMA) ; Paul, Srijit (U. Mainz, PRISMA) ; Risch, Andreas (NIC, Zeuthen) ; San José, Teseo (U. Mainz, PRISMA ; Helmholtz Inst., Mainz) ; Wittig, Hartmut (U. Mainz, PRISMA ; Helmholtz Inst., Mainz ; CERN) |
| Publication | 2023-01-29 |
| Imprint | 2022-11-30 |
| Number of pages | 10 |
| Note | 10 pages, 5 figures, Proceedings of the 39th International Symposium on Lattice Field Theory, 8th-13th August 2022, Bonn, Germany |
| In: | PoS LATTICE2022 (2023) 321 |
| In: | 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, 8 - 13 Aug 2022, pp.321 |
| DOI | 10.22323/1.430.0321 |
| Subject category | Particle Physics - Phenomenology ; Particle Physics - Lattice |
| Abstract | Following the publication of the new measurement of the anomalous magnetic moment of the muon, the discrepancy between experiment and the theory prediction from the $g-2$ theory initiative has increased to $4.2\,\sigma$. Recent lattice QCD calculations predict values for the hadronic vacuum polarization contribution that are larger than the data-driven estimates, bringing the Standard Model prediction closer to the experimental measurement. Euclidean time windows in the time-momentum representation of the hadronic vacuum polarization contribution to the muon $g-2$ can help clarify the discrepancy between the phenomenological and lattice predictions. We present our calculation of the intermediate distance window contribution using $N_\mathrm{f}=2+1$ flavors of O$(a)$ improved Wilson quarks. We employ ensembles at six lattice spacings below $0.1\,$fm and pion masses down to the physical value. We present a detailed study of the continuum limit, using two discretizations of the vector current and two independent sets of improvement coefficients. Our result at the physical point displays a tension of $3.9\,\sigma$ with a recent evaluation of the intermediate window based on the data-driven method. |
| Copyright/License | preprint: (License: CC-BY-NC-ND-4.0) publication: © 2023-2025 The author(s) (License: CC-BY-NC-ND-4.0) |
Corresponding record in: Inspire
Element opprettet 2023-01-26, sist endret 2024-11-13
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