English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present the complete next-to-next-to-leading order (NNLO) pure pointlikeQED corrections to lepton-proton scattering, including three-photon-exchangecontributions, and investigate their impact in the case of the MUSE experiment.These corrections are computed with no approximation regarding the energy ofthe emitted photons and taking into account lepton-mass effects. We contrastthe NNLO QED corrections to known next-to-leading order corrections, where weinclude the elastic two-photon exchange (TPE) through a simple hadronic modelcalculation with a dipole ansatz for the proton electromagnetic form factors.We show that, in the low-momentum-transfer region accessed by the MUSEexperiment, the improvement due to more sophisticated treatments of the TPE,including inelastic TPE, is of similar if not smaller size than some of theNNLO QED corrections. Hence, the latter have to be included in a precisiondetermination of the low-energy proton structure from scattering data, inparticular for electron-proton scattering. For muon-proton scattering, the NNLOQED corrections are considerably smaller.

Impact of NNLO QED corrections on lepton-proton scattering at MUSE