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The hadronic vacuum polarization contribution to the muon $g-2$ at long distances
/ Djukanovic, Dalibor (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; von Hippel, Georg (U. Mainz, PRISMA) ; Kuberski, Simon (CERN) ; Meyer, Harvey B. (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA) ; Miller, Nolan (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Ottnad, Konstantin (U. Mainz, PRISMA) ; Parrino, Julian (U. Mainz, PRISMA) ; Risch, Andreas (Wuppertal U.) ; Wittig, Hartmut (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA)
We present our lattice QCD result for the long-distance part of the hadronic vacuum polarization contribution, $(a_\mu^{\rm hvp})^{\rm LD}$, to the muon $g-2$ in the time-momentum representation. [...]
CERN-TH-2024-196 ; MITP-24-080 ; arXiv:2411.07969.
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Hadronic vacuum polarization in the muon $g-2$: The short-distance contribution from lattice QCD
/ Kuberski, Simon (CERN) ; Cè, Marco (INFN, Milan Bicocca) ; von Hippel, Georg (U. Mainz, PRISMA) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI) ; Ottnad, Konstantin (U. Mainz, PRISMA) ; Risch, Andreas (Wuppertal U. ; NIC, Zeuthen ; DESY, Zeuthen) ; Wittig, Hartmut (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI)
We present results for the short-distance window observable of the hadronic vacuum polarization contribution to the muon $g-2$, computed via the time-momentum representation (TMR) in lattice QCD. A key novelty of our calculation is the reduction of discretization effects by a suitable subtraction applied to the TMR kernel function, which cancels the leading $x_0^4$-behaviour at short distances. [...]
arXiv:2401.11895; MITP-24-011; CERN-TH-2024-011.-
2024-03-29 - 37 p.
- Published in : JHEP 2403 (2024) 172
Fulltext: 2401.11895 - PDF; document - PDF;
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Intermediate window observable for the hadronic vacuum polarization contribution to the muon $g-2$ from O$(a)$ improved Wilson quarks
/ 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) et al.
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. [...]
arXiv:2211.17083; MITP-22-102; DESY-22-193.-
2023-01-29 - 10 p.
- Published in : PoS LATTICE2022 (2023) 321
Fulltext: 2211.17083 - PDF; document - PDF;
In : 39th International Symposium on Lattice Field Theory (Lattice 2022), Bonn, Germany, 8 - 13 Aug 2022, pp.321
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HVP contribution to Running Coupling and Electroweak Precision Science
/ Miura, Kohtaroh (Helmholtz Inst., Mainz ; Darmstadt, GSI ; KMI, Nagoya) ; Cè, Marco (CERN) ; Gérardin, Antoine (Aix-Marseille U.) ; von Hippel, Georg (U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Meyer, Harvey B (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Ottnad, Konstantin (Mainz U., Inst. Kernphys. ; U. Mainz, PRISMA) ; Risch, Andreas (NIC, Zeuthen) ; San Jose, Teseo (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Wilhelm, Jonas (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; Mainz U., Inst. Kernphys. ; CERN) ; Wittig, Hartmut (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; Mainz U., Inst. Kernphys. ; CERN)
We investigate the impact of the latest Mainz/CLS collaboration’s result for the hadronic vacuum polarization (HVP) on the electroweak (EW) precision science. The subject is closely related to the muon g-2 via the HVP. [...]
2022 - 9 p.
- Published in : PoS LATTICE2021 (2022) 342
Fulltext: PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.342
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Window observable for the hadronic vacuum polarization contribution to the muon $g-2$ from lattice QCD
/ Cè, Marco (U. Bern, AEC ; CERN) ; Gérardin, Antoine (Marseille, CPT) ; von Hippel, Georg (U. Mainz, PRISMA) ; Hudspith, Renwick J. (Helmholtz Inst., Mainz) ; Kuberski, Simon (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Helmholtz Inst., Mainz) ; Miura, Kohtaroh (Helmholtz Inst., Mainz ; Nagoya U. (main)) ; Mohler, Daniel (Darmstadt, GSI ; Darmstadt, Tech. U.) ; Ottnad, Konstantin (U. Mainz, PRISMA) ; Paul Srijit (U. Mainz, PRISMA) et al.
Euclidean time windows in the integral representation of the hadronic vacuum polarization contribution to the muon $g-2$ serve to test the consistency of lattice calculations and may help in tracing the origins of a potential tension between lattice and data-driven evaluations. In this paper, we present results for the intermediate time window observable computed using O($a$) improved Wilson fermions at six values of the lattice spacings below 0.1 fm and pion masses down to the physical value. [...]
arXiv:2206.06582; MITP-22-038; CERN-TH-2022-098; DESY-22-105.-
2022-12-01 - 43 p.
- Published in : Phys. Rev. D 106 (2022) 114502
Fulltext: Publication - PDF; 2206.06582 - PDF;
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Prospects for precise predictions of $a_\mu$ in the Standard Model
/ Colangelo, G. (U. Bern (main)) ; Davier, M. (IJCLab, Orsay) ; El-Khadra, A.X. (Illinois U., Urbana ; Fermilab) ; Hoferichter, M. (U. Bern (main)) ; Lehner, C. (Regensburg U.) ; Lellouch, L. (Marseille, CPT) ; Mibe, T. (KEK, Tsukuba) ; Roberts, B.L. (Boston U.) ; Teubner, T. (Liverpool U., Dept. Math.) ; Wittig, H. (U. Mainz, PRISMA ; Darmstadt, GSI) et al.
We discuss the prospects for improving the precision on the hadronic corrections to the anomalous magnetic moment of the muon, and the plans of the Muon $g-2$ Theory Initiative to update the Standard Model prediction..
arXiv:2203.15810 ; FERMILAB-CONF-22-236-T ; LTH 1303 ; MITP-22-030.
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Fermilab Library Server - eConf - Fulltext - Fulltext
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The hadronic running of the electromagnetic coupling and the electroweak mixing angle from lattice QCD
/ Cè, Marco (U. Bern, AEC ; CERN) ; Gérardin, Antoine (Marseille, CPT) ; von Hippel, Georg (U. Mainz, PRISMA) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Miura, Kohtaroh (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI ; KMI, Nagoya) ; Ottnad, Konstantin (U. Mainz, PRISMA) ; Risch, Andreas (DESY, Zeuthen) ; San José, Teseo (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI) ; Wilhelm, Jonas (U. Mainz, PRISMA) ; Wittig, Hartmut (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI ; CERN)
We compute the hadronic running of the electromagnetic and weak couplings in lattice QCD with $N_{\mathrm{f}}=2+1$ flavors of $\mathcal{O}(a)$ improved Wilson fermions. Using two different discretizations of the vector current, we compute the quark-connected and -disconnected contributions to the hadronic vacuum polarization (HVP) functions $\bar{\Pi}^{\gamma\gamma}$ and $\bar{\Pi}^{\gamma Z}$ for Euclidean squared momenta $Q^2\leq 7\,\mathrm{GeV}^2$. [...]
arXiv:2203.08676; MITP-22-019; CERN-TH-2022-035; DESY-22-050.-
2022-08-22 - 63 p.
Fulltext: 2203.08676 - PDF; document - PDF;
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Scale Setting for CLS 2+1 Simulations
/ Strassberger, Ben (NIC, Zeuthen) ; Cè, Marco (CERN) ; Collins, Sara (Regensburg U.) ; Gérardin, Antoine (Marseille, CPT) ; von Hippel, Georg (Mainz U.) ; Korcyl, Piotr (Jagiellonian U.) ; Korzec, Tomasz (Bergische U., Wuppertal (main)) ; Mohler, Daniel (Darmstadt, GSI) ; Risch, Andreas (NIC, Zeuthen) ; Schaefer, Stefan (NIC, Zeuthen) et al.
We present an update of the scale setting for $N_f=2+1$ flavor QCD using gradient flow scales and pseudo-scalar decay constants. We analyze the latest ensembles with $2+1$ flavors of non-perturbatively improved Wilson fermions generated by CLS for improved precision. [...]
arXiv:2112.06696; DESY-21-175; WUB/21-05.-
2022-05-16 - 10 p.
- Published in : PoS: LATTICE2021 (2022) , pp. 135
Fulltext: document - PDF; 2112.06696 - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.135
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The hadronic contribution to the running of the electromagnetic coupling and electroweak mixing angle
/ San José, Teseo (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Cè, Marco (CERN) ; Gérardin, Antoine (Aix-Marseille U. ; Toulon U.) ; von Hippel, Georg (U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Meyer, Harvey B. (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Miura, Kohtaroh (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; KMI, Nagoya) ; Ottnad, Konstantin (U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Risch, Andreas (NIC, Zeuthen) ; Wilhelm, Jonas (CERN ; Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.) ; Wittig, Hartmut (CERN ; Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA ; Mainz U., Inst. Kernphys.)
As present and future experiments, on both the energy and precision frontiers, look to identify new physics beyond the Standard Model, we require more precise determinations of fundamental quantities, like the QED and electroweak couplings at various momenta. These can be obtained either entirely from experimental measurements, or from one such measurement at a particular virtuality combined with the couplings' virtuality dependence computed within the SM. [...]
arXiv:2109.04537; CERN-TH-2021-126; DESY-21-137; MITP/21-038.-
2022-05-16 - 9 p.
- Published in : PoS: LATTICE2021 (2022) , pp. 423
Fulltext: 2109.04537 - PDF; Fulltext - PDF; document - PDF;
In : 38th International Symposium on Lattice Field Theory, Online, 26 - 30 Jul 2021, pp.423
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The leading hadronic vacuum polarization contribution to the muon anomalous magnetic moment using $N_f = 2+1$ O($a$) improved Wilson quarks
/ Gérardin, Antoine (DESY, Zeuthen) ; Cè, Marco (Helmholtz Inst., Mainz) ; von Hippel, Georg (U. Mainz, PRISMA ; Mainz U., Inst. Phys.) ; Hörz, Ben (LBL, Berkeley) ; Meyer, Harvey (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Helmholtz Inst., Mainz) ; Mohler, Daniel (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Helmholtz Inst., Mainz) ; Ottnad, Konstantin (U. Mainz, PRISMA ; Mainz U., Inst. Phys.) ; Wilhelm, Jonas (U. Mainz, PRISMA ; Mainz U., Inst. Phys.) ; Wittig, Hartmut (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Helmholtz Inst., Mainz)
We present a lattice calculation of the leading hadronic contribution to the anomalous magnetic moment of the muon. This work is based on a subset of the CLS ensembles with $N_f = 2+1$ dynamical quarks and a quenched charm quark. [...]
arXiv:1911.04733; MITP/19-075; DESY-19-196.-
SISSA, 2019-11-12 - 7 p.
- Published in : PoS LATTICE2019 (2019) 110
Fulltext: PDF; Fulltext from publisher: PDF;
In : 37th International Symposium on Lattice Field Theory, Wuhan, Hubei, China, 16 - 22 Jun 2019, pp.110
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