K. Ottnad

activity

20172026

most citedThe anomalous magnetic moment of the muon in the Standard Model

1.2k citations · 2k across the 49 of their papers we have counts for

collaborators

55 papers

hep-lat2026★ 1 cited

Running of the Electroweak Gauge Couplings from First Principles

Alessandro Conigli, Dalibor Djukanovic, Georg von Hippel +6

We present a high-precision calculation of the hadronic running of electroweak gauge couplings from first principles. Employing lattice QCD in the low-energy regime, we achieve per…

hep-lat2026

The strange and flavor-singlet axial form factors of the nucleon from lattice QCD

Alessandro Barone, Dalibor Djukanovic, Georg von Hippel +3

The singlet axial form factor of the nucleon provides essential input for a complete understanding of the nucleon axial structure. Together with the isovector and isoscalar octet c…

hep-lat2026

Lattice determination of the higher-order hadronic vacuum polarization contribution to the muon $g - 2$

Arnau Beltran, Alessandro Conigli, Simon Kuberski +3

We present the first lattice QCD calculation of the next-to-leading order (NLO) hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment with sub-perce…

hep-lat2026

The hadronic contribution to the running of the electroweak gauge couplings

Alessandro Conigli, Dalibor Djukanovic, Georg von Hippel +6

We present an updated determination of the hadronic vacuum polarization contribution to the running of the electromagnetic coupling $Δ α_{had}^{(5)} (- Q^{2})$ , and of the elec…

hep-lat2026

Factorizing the position-space photon propagator in QED corrections to lattice QCD correlators

Dominik Erb, Harvey B. Meyer, Konstantin Ottnad

Electromagnetic corrections to the $n$ -point functions of lattice QCD can be evaluated using a position-space photon propagator defined in infinite volume. Here we address the comp…

hep-lat2026

Higher-order hadronic vacuum polarization contribution to the muon $g - 2$ from lattice QCD

Arnau Beltran, Alessandro Conigli, Simon Kuberski +3

We present the first lattice QCD calculation of the next-to-leading order hadronic vacuum polarization contribution to the muon anomalous magnetic moment with sub-percent precision…

hep-lat2025★ 1 cited

Precision lattice calculation of the hadronic contribution to the running of the electroweak gauge couplings

Alessandro Conigli, Dalibor Djukanovic, Georg von Hippel +6

We present an update of our lattice QCD determination of the hadronic contribution to the running of the electromagnetic coupling, $Δ α_{had}^{(5)} (- Q^{2})$ , and of the elect…

hep-lat2025

Low-Energy Constants of Chiral Perturbation Theory from Pion Scalar Form Factors in $N_{f} = 2 + 1$ -Flavor Lattice QCD with Controlled Errors

Georg von Hippel, Konstantin Ottnad

We determine the low-energy constants (LECs) $f_{0}$ , $L_{4}^{r}$ and $L_{5}^{r}$ of SU(3) Chiral Perturbation Theory ( $χ$ PT) from a lattice QCD calculation of the scalar form factors of the…

hep-lat2025

The Scalar Size of the Pion from Lattice QCD

Konstantin Ottnad, Georg von Hippel

We present a lattice QCD calculation of the pion scalar form factor and associated radii with fully controlled systematics. Lattice results are computed on a large set of 17 gauge…

hep-lat2025

The $π^{0} \to γ^{} γ^{}$ transition form factor and the pion pole contribution to $a_{μ}$ on CLS ensembles

Jonna Koponen, Antoine Gerardin, Harvey B. Meyer +2

We present the status of the Mainz group's lattice QCD calculation of the pion transition form factor $F_{π^{0} γ^{*} γ^{*}}$ , which describes the interaction of an on-shel…

hep-lat2025★ 1 cited

The isoscalar octet axial form factor of the nucleon from lattice QCD

Alessandro Barone, Dalibor Djukanovic, Georg von Hippel +4

The isoscalar axial-vector form factor of the nucleon plays a key role in understanding the electroweak interaction of nucleons. For the interpretation of the spin structure of the…

hep-lat2025

The hadronic contribution to the running of $α$ and the electroweak mixing angle

Alessandro Conigli, Georg von Hippel, Simon Kuberski +3

We report on our update to [1] on the hadronic running of electroweak couplings from $O (a)$ -improved Wilson fermions with $N_{f} = 2 + 1$ flavours. The inclusion of additional ensembles…

hep-lat2025

The isoscalar non-singlet axial form factor of the nucleon from lattice QCD

Alessandro Barone, Dalibor Djukanovic, Georg von Hippel +4

We present our progress on the computation of the axial form factor of the nucleon with flavour structure $u + d - 2 s$ from lattice QCD. We employ a set of $N_{f} = 2 + 1$ CLS ensembles with…

hep-lat2024★ 1 cited

The hadronic vacuum polarization contribution to the muon $g - 2$ at long distances

Dalibor Djukanovic, Georg von Hippel, Simon Kuberski +6

We present our lattice QCD result for the long-distance part of the hadronic vacuum polarization contribution, $(a_{μ}^{hvp})^{LD}$ , to the muon $g - 2$ in the time-momentum re…

hep-lat2024

Improved analysis of isovector nucleon matrix elements with $N_{f} = 2 + 1$ flavors of $O (a)$ improved Wilson fermions

Dalibor Djukanovic, Georg von Hippel, Harvey B. Meyer +2

We present an update of our determination of the isovector charges $g_{A}^{u - d}$ , $g_{S}^{u - d}$ and $g_{T}^{u - d}$ , and the isovector twist-2 forward matrix elements $\langle x\rangle_{u-…

hep-lat2024

Hadronic vacuum polarization in the muon $g - 2$ : The short-distance contribution from lattice QCD

Simon Kuberski, Marco Cè, Georg von Hippel +4

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)…

hep-lat2024

The pion scalar form factor with $N_{f} = 2 + 1$ Wilson fermions

Konstantin Ottnad, Georg von Hippel

We report preliminary results from an analysis of the pion scalar form factor computed on a set of the $tr [M] = const$ CLS gauge ensembles with $N_{f} = 2 + 1$ Wilson Clo…

hep-lat2023

Proton and neutron electromagnetic radii and magnetic moments from lattice QCD

Miguel Salg, Dalibor Djukanovic, Georg von Hippel +3

We present results for the electromagnetic form factors of the proton and neutron computed on the $(2 + 1)$ -flavor Coordinated Lattice Simulations (CLS) ensembles including both qu…

hep-lat2023

Proton and neutron electromagnetic radii and magnetic moments from $N_{f} = 2 + 1$ lattice QCD

Miguel Salg, Dalibor Djukanovic, Georg von Hippel +3

We present results for the electromagnetic form factors of the proton and neutron computed on the $(2 + 1)$ -flavor Coordinated Lattice Simulations (CLS) ensembles including both qu…

hep-lat2023

Status update: $π^{0} \to γ^{} γ^{}$ transition form factor on CLS ensembles

Jonna Koponen, Antoine Gérardin, Harvey B. Meyer +2

In this report we present the status of the Mainz group's lattice QCD calculation of the pion transition form factor, which describes the interaction of an on-shell pion with two o…

hep-lat2023★ 4 cited

Zemach and Friar radii of the proton and neutron from lattice QCD

Dalibor Djukanovic, Georg von Hippel, Harvey B. Meyer +3

We present the first lattice-QCD result for the Zemach and Friar radii of the proton and neutron. Our calculation includes both quark-connected and -disconnected diagrams and asses…

hep-lat2023★ 23 cited

Precision calculation of the electromagnetic radii of the proton and neutron from lattice QCD

Dalibor Djukanovic, Georg von Hippel, Harvey B. Meyer +3

We present lattice-QCD results for the electromagnetic form factors of the proton and neutron including both quark-connected and -disconnected contributions. The parametrization of…

hep-lat2023★ 21 cited

Electromagnetic form factors of the nucleon from $N_{f} = 2 + 1$ lattice QCD

Dalibor Djukanovic, Georg von Hippel, Harvey B. Meyer +3

There is a long-standing discrepancy between different measurements of the electric and magnetic radii of the proton. Lattice QCD calculations are a well-suited tool for theoretica…

hep-lat2023★ 25 cited

Nucleon Sigma Terms with $N_{f} = 2 + 1$ O( $a$ )-improved Wilson fermions

Andria Agadjanov, Dalibor Djukanovic, Georg von Hippel +3

We present a lattice-QCD based analysis of the nucleon sigma terms using gauge ensembles with $N_{f} = 2 + 1$ flavors of $O (a)$ -improved Wilson fermions, with a complete error…

Running of the Electroweak Gauge Couplings from First Principles

The strange and flavor-singlet axial form factors of the nucleon from lattice QCD

Lattice determination of the higher-order hadronic vacuum polarization contribution to the muon g−2

The hadronic contribution to the running of the electroweak gauge couplings

Factorizing the position-space photon propagator in QED corrections to lattice QCD correlators

Higher-order hadronic vacuum polarization contribution to the muon g−2 from lattice QCD

Precision lattice calculation of the hadronic contribution to the running of the electroweak gauge couplings

Low-Energy Constants of Chiral Perturbation Theory from Pion Scalar Form Factors in Nf​=2+1-Flavor Lattice QCD with Controlled Errors

The Scalar Size of the Pion from Lattice QCD

The π0→γ∗γ∗ transition form factor and the pion pole contribution to aμ​ on CLS ensembles

The isoscalar octet axial form factor of the nucleon from lattice QCD

The hadronic contribution to the running of α and the electroweak mixing angle

The isoscalar non-singlet axial form factor of the nucleon from lattice QCD

The hadronic vacuum polarization contribution to the muon g−2 at long distances

Improved analysis of isovector nucleon matrix elements with Nf​=2+1 flavors of O(a) improved Wilson fermions

Hadronic vacuum polarization in the muon g−2: The short-distance contribution from lattice QCD

The pion scalar form factor with Nf​=2+1 Wilson fermions

Proton and neutron electromagnetic radii and magnetic moments from lattice QCD

Proton and neutron electromagnetic radii and magnetic moments from Nf​=2+1 lattice QCD

Status update: π0→γ∗γ∗ transition form factor on CLS ensembles

Zemach and Friar radii of the proton and neutron from lattice QCD

Precision calculation of the electromagnetic radii of the proton and neutron from lattice QCD

Electromagnetic form factors of the nucleon from Nf​=2+1 lattice QCD

Nucleon Sigma Terms with Nf​=2+1 O(a)-improved Wilson fermions

Lattice determination of the higher-order hadronic vacuum polarization contribution to the muon $g - 2$

Higher-order hadronic vacuum polarization contribution to the muon $g - 2$ from lattice QCD

Low-Energy Constants of Chiral Perturbation Theory from Pion Scalar Form Factors in $N_{f} = 2 + 1$ -Flavor Lattice QCD with Controlled Errors

The $π^{0} \to γ^{} γ^{}$ transition form factor and the pion pole contribution to $a_{μ}$ on CLS ensembles

The hadronic contribution to the running of $α$ and the electroweak mixing angle

The hadronic vacuum polarization contribution to the muon $g - 2$ at long distances

Improved analysis of isovector nucleon matrix elements with $N_{f} = 2 + 1$ flavors of $O (a)$ improved Wilson fermions

Hadronic vacuum polarization in the muon $g - 2$ : The short-distance contribution from lattice QCD

The pion scalar form factor with $N_{f} = 2 + 1$ Wilson fermions

Proton and neutron electromagnetic radii and magnetic moments from $N_{f} = 2 + 1$ lattice QCD

Status update: $π^{0} \to γ^{} γ^{}$ transition form factor on CLS ensembles

Electromagnetic form factors of the nucleon from $N_{f} = 2 + 1$ lattice QCD

Nucleon Sigma Terms with $N_{f} = 2 + 1$ O( $a$ )-improved Wilson fermions