Data-driven evaluation of the hadronic vacuum polarization (B03)

• Subject Area: Nuclear and Elementary Particle Physics, Quantum Mechanics, Relativity, Fields
• Term: since 2024
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 514321794

This project will significantly improve the accuracy of the data-driven determination of the Hadronic Vacuum Polarization (HVP) contribution to (g-2)my and to the determination of the running of the electromagnetic fine structure constant. The improvement will be achieved through the measurement of the most important exclusive contribution, the pion time-like form factor, with world leading precision. Additionally, this project will allow for an independent (data-driven) determination of HVP thanks to the first inclusive measurement of the hadron production cross section at lower energies (below 2 GeV) using a highly innovative technique based on the initial state radiation process.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1660: Hadrons and Nuclei as Discovery Tools
• Applicant Institution: Johannes Gutenberg-Universität Mainz
• Project Heads: Dr. Riccardo Aliberti; Professor Dr. Achim Denig