Overview of recent theoretical work on two-photon exchange | Zendy

P. G. Blunden | Zendy

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Overview of recent theoretical work on two-photon exchange

Author(s) -

P. G. Blunden

Publication year - 2018

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.5040197

Subject(s) - proton , scattering , photon , elastic scattering , physics , electron , work (physics) , radius , electron exchange , nuclear physics , positron , measure (data warehouse) , perspective (graphical) , atomic physics , computer science , quantum mechanics , computer security , database , artificial intelligence

In this contribution I give an overview of recent progress in theoretical calculations of two-photon exchange (TPE) effects in elastic electron-proton scattering. TPE effects are relevant for extractions of proton form factors at high Q2, and of the proton radius at very low Q2. Recent experiments to directly measure hard TPE effects by comparing positron and electron scattering are discussed from a theoretical perspective.

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