The charge asymmetry from Pomeron-Odderon interference in hard diffractive pi+pi- -electroproduction
Ph. Hagler, B. Pire, L. Szymanowski, O. V. Teryaev
Abstract
The interference of Pomeron and Odderon amplitudes gives rise to a charge asymmetry in the diffractive electroproduction of a pi+pi- -pair. We calculate this charge asymmetry in perturbative QCD in the Born approximation and on the leading Q2-level. The numerical evaluation shows a sizeable asymmetry in an experimentally accessible kinematical region. We find a characteristic mpi+pi -dependence mainly dictated by the relevant Breit-Wigner-amplitudes and the corresponding phase-shifts.
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