Polarization effects in the reaction $\bar p+p\to e^++e^-$ in presence of two-photon exchange

Details Polarization effects in the reaction $\bar p+p\to e^++e^-$ in presence of two-photon exchange Polarization effects in the reaction $\bar p+p\to e^++e^-$ in presence of two-photon exchange

2005-04-06

arxiv.org/abs/nucl-th/0504021v1

Nucl.Phys. A761 (2005) 120-131

Physics

Nuclear Physics

Nuclear Theory

15 pages

Scientific paper

10.1016/j.nuclphysa.2005.07.002

Polarization observables for the reaction $\bar p+p\to e^++e^-$ are given in terms of three independent complex amplitudes, in presence of two photon exchange. General expressions for the differential cross section and the polarization observables are given and model independent properties are derived. Polarization effects depending on the polarization of the antiproton beam, the target and of the electron in the final state, have been calculated.

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