Model independent properties of two-photon exchange in elastic electron proton scattering

Michail P. Rekalo (1) , Egle Tomasi-Gustafsson (1)

1 DAPNIA - Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée

We derive from first principles, as the C-invariance of the electromagnetic interaction and the crossing symmetry, the general properties of two-photon exchange in electron-proton elastic scattering. We show that the presence of this mechanism destroys the linearity of the Rosenbluth separation.

Domaines: Physique Nucléaire Théorique [nucl-th]

Michail P. Rekalo, Egle Tomasi-Gustafsson. Model independent properties of two-photon exchange in elastic electron proton scattering. European Physical Journal A, 2004, 22, pp.331-336. ⟨hal-00122466⟩