4 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 contri…
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…