1.2k citations · 2.2k across the 34 of their papers we have counts for
38 papers
Hadronic vacuum polarization in hydrogen-like atoms and ions amid the interplay of recoil and finite-size effects
Franziska Hagelstein, Vadim Lensky, Bogdan Malaescu +1
Hadronic vacuum polarization (hVP) enters simple atomic systems at a level that is small yet decisive for the precision spectroscopy now underway. We evaluate the hVP contributions…
Combined Analysis of Lattice QCD and Experimental Data on the Pion Transition Form Factor
Franziska Hagelstein, Danaheb Naomi Navarro Durán, Timon Esser +3
The evaluation of the hadronic light-by-light scattering contribution to the muon anomalous magnetic moment requires precise knowledge of the pion transition form factor (TFF). In…
The anomalous magnetic moment of the muon in the Standard Model: an update
R. Aliberti, T. Aoyama, E. Balzani +232
We present the current Standard Model (SM) prediction for the muon anomalous magnetic moment, , updating the first White Paper (WP20) [1]. The pure QED and electroweak contrib…
New Spin Structure Constraints on Hyperfine Splitting and Proton Size
David Ruth, Karl Slifer, Jian-Ping Chen +9
The 1S hyperfine splitting in hydrogen is measured to an impressive ppt precision and will soon be measured to ppm precision in muonic hydrogen. The latter measurement will rely on…
Impact of NNLO QED corrections on lepton-proton scattering at MUSE
T. Engel, F. Hagelstein, M. Rocco +3
We present the complete next-to-next-to-leading order (NNLO) pure pointlike QED corrections to lepton-proton scattering, including three-photon-exchange contributions, and investig…
Radiative Corrections: From Medium to High Energy Experiments
Andrei Afanasev, Jan C. Bernauer, Peter Blunden +16
Radiative corrections are crucial for modern high-precision physics experiments, and are an area of active research in the experimental and theoretical community. Here we provide a…
Chiral perturbation theory of the hyperfine splitting in (muonic) hydrogen
Franziska Hagelstein, Vadim Lensky, Vladimir Pascalutsa
The ongoing experimental efforts to measure the hyperfine transition in muonic hydrogen prompt an accurate evaluation of the proton-structure effects. At the leading order in ,…
The QED of Bernabéu-Tarrach sumrule for electric polarizability and its implication for the Lamb shift
Volodymyr Biloshytskyi, Iulian Ciobotaru-Hriscu, Franziska Hagelstein +2
We attempt to rehabilitate a sum rule (proposed long ago by Bernabéu and Tarrach) which relates the electric polarizability of a particle to the total photoabsorption of quasi-real…
Comprehensive theory of the Lamb shift in light muonic atoms
K. Pachucki, V. Lensky, F. Hagelstein +3
A comprehensive theory of the Lamb shift in light muonic atoms such as H, D, He, and He is presented, with all quantum electrodynamic corrections included a…
Muonic-Atom Spectroscopy and Impact on Nuclear Structure and Precision QED Theory
Aldo Antognini, Sonia Bacca, Andreas Fleischmann +10
Recent progress in laser and x-ray spectroscopy of muonic atoms offers promising long-term possibilities at the intersection of atomic, nuclear and particle physics. In muonic hydr…
Theoretical discrepancies in the nucleon spin structure and the hyperfine splitting of muonic hydrogen
Vladimir Pascalutsa, Franziska Hagelstein, Vadim Lensky
Two groups, ours (Mainz) and Bochum, have recently been re-evaluating the spin polarizabilities and spin structure functions at low , using the baryon chiral perturbation theory…
Forward light-by-light scattering and electromagnetic correction to hadronic vacuum polarization
Volodymyr Biloshytskyi, En-Hung Chao, Antoine Gérardin +5
Lattice QCD calculations of the hadronic vacuum polarization (HVP) have reached a precision where the electromagnetic (e.m.) correction can no longer be neglected. This correction…
Two-photon exchange in (muonic) deuterium at N3LO in pionless effective field theory
Vadim Lensky, Franziska Hagelstein, Vladimir Pascalutsa
We present a study of the two-photon-exchange (-exchange) corrections to the -levels in muonic (D) and ordinary (D) deuterium within the pionless effective field theory (…
A reassessment of nuclear effects in muonic deuterium using pionless effective field theory at N3LO
Vadim Lensky, Franziska Hagelstein, Vladimir Pascalutsa
We provide a systematic assessment of the order- nuclear contributions to the Lamb shift of muonic deuterium, including the accompanying radiative corrections due to vacuum po…
The proton structure in and out of muonic hydrogen
Aldo Antognini, Franziska Hagelstein, Vladimir Pascalutsa
Laser spectroscopy of muonic atoms has been recently used to probe properties of light nuclei with unprecedented precision. We introduce nuclear effects in hydrogen-like atoms, nuc…
Prospects for precise predictions of in the Standard Model
G. Colangelo, M. Davier, A. X. El-Khadra +79
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 Theory Initiative to…
Deuteron VVCS and nuclear structure effects in muonic deuterium at N3LO in pionless EFT
Vadim Lensky, Franziska Hagelstein, Astrid Hiller Blin +1
We present our studies of the forward unpolarised doubly-virtual Compton scattering (VVCS) off the deuteron and the closely related two-photon-exchange (-exchange) corrections…
Short-distance constraints for the longitudinal component of the hadronic light-by-light amplitude: an update
Gilberto Colangelo, Franziska Hagelstein, Martin Hoferichter +2
We reassess the impact of short-distance constraints for the longitudinal component of the hadronic light-by-light amplitude on the anomalous magnetic moment of the muon, $a_μ=(g-2…
The subtraction contribution to the muonic-hydrogen Lamb shift: a point for lattice QCD calculations of the polarizability effect
Franziska Hagelstein, Vladimir Pascalutsa
The proton-polarizability contribution to the muonic-hydrogen Lamb shift is a major source of theoretical uncertainty in the extraction of the proton charge radius. An empirical ev…
Nucleon Polarizabilities and Compton Scattering as a Playground for Chiral Perturbation Theory
Franziska Hagelstein
I give a summary of recent results on nucleon polarizabilities, with emphasis on chiral perturbation theory. The predictive calculations of Compton scattering off the nucleon are c…
Forward doubly-virtual Compton scattering off the nucleon in chiral perturbation theory: II. Spin polarizabilities and moments of polarized structure functions
Jose Manuel Alarcón, Franziska Hagelstein, Vadim Lensky +1
We examine the polarized doubly-virtual Compton scattering (VVCS) off the nucleon using chiral perturbation theory (PT). The polarized VVCS contains a wealth of information on t…
The anomalous magnetic moment of the muon in the Standard Model
T. Aoyama, N. Asmussen, M. Benayoun +129
We review the present status of the Standard Model calculation of the anomalous magnetic moment of the muon. This is performed in a perturbative expansion in the fine-structure con…
Forward doubly-virtual Compton scattering off the nucleon in chiral perturbation theory: the subtraction function and moments of unpolarized structure functions
Jose Manuel Alarcón, Franziska Hagelstein, Vadim Lensky +1
The forward doubly-virtual Compton scattering (VVCS) off the nucleon contains a wealth of information on nucleon structure, relevant to the calculation of the two-photon-exchange e…
Longitudinal short-distance constraints for the hadronic light-by-light contribution to with large- Regge models
Gilberto Colangelo, Franziska Hagelstein, Martin Hoferichter +2
While the low-energy part of the hadronic light-by-light (HLbL) tensor can be constrained from data using dispersion relations, for a full evaluation of its contribution to the ano…