Determination of two-photon exchange amplitudes from elastic electron-proton scattering data

作者：Guttmann J^*; Kivel N; Meziane M; Vanderhaeghen M

来源：European Physical Journal A, 2011, 47(6): 77.

DOI：10.1140/epja/i2011-11077-4

Using the available cross-section and polarization data for elastic electron-proton scattering, we provide an extraction of the two-photon exchange amplitudes at a common value of four-momentum transfer, around Q(2) = 2.5 GeV(2). This analysis also predicts the e(+)p/e(-)p elastic-scattering cross-section ratio, which will be measured by forthcoming experiments.

• 出版日期2011-6