https://doi.org/10.1140/epja/s10050-021-00630-5
Regular Article - Theoretical Physics
Virtual Compton scattering at low energies with a positron beam
1
Dipartimento di Fisica, Università degli Studi di Pavia, 27100, Pavia, Italy
2
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia, 27100, Pavia, Italy
3
Institut für Kernphysik and PRISMA+ Cluster of Excellence, Johannes Gutenberg Universität, 55099, Mainz, Germany
Received:
10
June
2021
Accepted:
7
November
2021
Published online:
22
November
2021
The Virtual Compton scattering (VCS) process at low energies explores the electromagnetic structure of the proton in terms of generalized polarizabilities (GPs). In the one-photon exchange approximation, VCS can be accessed with exclusive photon production reactions with electron or positron beams. The extraction of the GPs from VCS with electron beam has seen substantial progress over the past two decades. Nonetheless, a consistent picture of the GPs from low to higher scales demands further investigations. Complementary measurements with positron beams offer an unique possibility, and we present an impact study of such experimental program.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021
