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arXiv · 1803.05349

Dispersion relation formalism for the two-photon exchange correction to elastic muon-proton scattering: elastic intermediate state

Oleksandr Tomalak·Marc Vanderhaeghen
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Abstract

We evaluate the two-photon exchange correction to the unpolarized cross section in the elastic muon-proton scattering within dispersion relations. One of the six independent invariant amplitudes requires a subtraction. We fix the subtraction function to the model estimate of the full two-photon exchange at one of three MUSE beam energies and make a prediction for the two other energies. Additionally, we present single and double polarization observables accounting for the lepton mass.

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Oleksandr Tomalak, Marc Vanderhaeghen. 2018-03-14. Dispersion relation formalism for the two-photon exchange correction to elastic muon-proton scattering: elastic intermediate state. https://doi.org/10.1140/epjc%2Fs10052-018-5988-5

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