The charge asymmetry from Pomeron-Odderon interference in hard diffractive pi+pi- -electroproduction

Details The charge asymmetry from Pomeron-Odderon interference in hard diffractive pi+pi- -electroproduction The charge asymmetry from Pomeron-Odderon interference in hard diffractive pi+pi- -electroproduction

2002-06-26

arxiv.org/abs/hep-ph/0206270v2

Nucl.Phys. A711 (2002) 232-235

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 .eps-figures; Talk given by Ph.H. at the QCD-N'02 workshop in Ferrara; Typos corrected, one reference added

Scientific paper

10.1016/S0375-9474(02)01223-X

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 Q^2-level. The numerical evaluation shows a sizeable asymmetry in an experimentally accessible kinematical region. We find a characteristic m_{pi+pi} -dependence mainly dictated by the relevant Breit-Wigner-amplitudes and the corresponding phase-shifts.

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