Pomeron-Odderon interference effects in electroproduction of two pions |
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Authors: | Ph Hägler B Pire L Szymanowski OV Teryaev |
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Institution: | Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, P.R. China, CN
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Abstract: | We study Pomeron-Odderon interference effects giving rise to charge and single-spin asymmetries in diffractive electroproduction
of a pair. We calculate these asymmetries, originating from both longitudinal and transverse polarizations of the virtual photon,
in the framework of QCD and in the Born approximation, in a kinematical domain accessible to HERA experiments. We predict
a sizable charge asymmetry with a characteristic dependence on the invariant mass of the pair, which makes this observable very important for establishing the magnitude of the Odderon exchange in hard processes.
The single-spin asymmetry turns out to be rather small. We briefly discuss future improvements of our calculations and their
possible effects on the results.
Received: 18 July 2002 / Published online: 25 October 2002 |
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