New data on the proton form factor at low-Q^2 from Mainz using a cluster/gas-jet target
ORAL
Abstract
Motivated by the decade old, still not fully resolved proton radius puzzle and the striking difference in low-Q^2 form factor extractions between the PRad and Mainz measurements, the A1 collaboration measured several kinematic points in the overlap region between the two data sets. To improve on previous measurements, a cluster/gas-jet target and additional halo shielding and veto detectors were installed. In the talk, we discuss these upgrades and the results of the first measurements.
*Dr. Bernauer is support by US National Science Foundation (NSF) grant PHY 2012114. This work was further supported in part by the PRISMA+ (Precision Physics, Fundamental Interactions and Structure of Matter) Cluster of Excellence, the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through the Collabora-tive Research Center 1044 and the Research Training Group GRK 2128 AccelencE (Accelerator Science and Technology for Energy-Recovery Linacs), the Federal State of Rhineland-Palatinate, and the European Union's Horizon 2020 research and innovation programme, project STRONG2020, under grant agreement No 824093.
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Presenters
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Jan C Bernauer
- Stony Brook University (SUNY)