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 …

Decays of the neutral and long-lived η and η′ mesons provide a unique, flavor-conserving
laboratory to test low-energy Quantum Chromodynamics and search for new physics …

We address the contribution of the 3 π channel to hadronic vacuum polarization (HVP) using
a dispersive representation of the e+ e−→ 3 π amplitude. This channel gives the second …

We present a detailed analysis of e+ e−→ π+ π− data up to s= 1 GeV in the framework of
dispersion relations. Starting from a family of ππ P-wave phase shifts, as derived from a …

The pion-pole contribution to hadronic light-by-light scattering in the anomalous magnetic
moment of the muon (g− 2) μ is fully determined by the doubly-virtual pion transition form …

A bstract Isospin-breaking (IB) effects in the two-pion contribution to hadronic vacuum
polarization (HVP) can be resonantly enhanced, if related to the interference of the ρ (770) …

We study the reaction e^+ e^-→ π^ 0 γ e+ e-→ π 0 γ based on a dispersive representation of
the underlying π^ 0 → γ γ^* π 0→ γ γ∗ transition form factor. As a first application, we …

High-statistics measurement of the pion form factor in the ρ-meson energy range with the
CMD-2 detector - ScienceDirect Skip to main contentSkip to article Elsevier logo Journals & …

We update the Standard Model predictions of the anomalous magnetic moment of the muon,
aμ≡(g− 2)/2, and the value of the QED coupling at the Z-boson mass, incorporating the new …

We analyze the pion transition form factor using dispersion theory. We calculate the singly-
virtual form factor in the time-like region based on data for the e^+ e^-→ 3 π e+ e-→ 3 π …