Virtual Compton scattering at low energies with a positron beam

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....

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Bibliographic Details
Published in:The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2021-11, Vol.57 (11), Article 316
Main Authors: Pasquini, Barbara, Vanderhaeghen, Marc
Format: Article
Language:English
Subjects:
An Experimental Program with Positron Beams at Jefferson Lab
Elastic scattering
Electron beams
Hadrons
Heavy Ions
Nuclear Fusion
Nuclear Physics
Particle and Nuclear Physics
Photons
Physics
Physics and Astronomy
Positron beams
Regular Article - Theoretical Physics
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Summary: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.
ISSN:1434-6001
1434-601X
DOI:10.1140/epja/s10050-021-00630-5