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Pomeron-Odderon interference effects in electroproduction of two pions

  • Ph. Hägler
  • B. Pire
  • L. Szymanowski
  • O.V. Teryaev
Theoretical Physics

Abstract.

We study Pomeron-Odderon interference effects giving rise to charge and single-spin asymmetries in diffractive electroproduction of a \(\pi^+ \pi^-\) 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 \(\pi^+ \pi^-\) 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.

Keywords

Invariant Mass Interference Effect Virtual Photon Born Approximation Future Improvement 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica 2002

Authors and Affiliations

  • Ph. Hägler
    • 1
  • B. Pire
    • 2
  • L. Szymanowski
    • 2
  • O.V. Teryaev
    • 3
  1. 1.Universität Regensburg, Institut für Theoretische Physik, 93040 Regensburg, Germany DE
  2. 2.CPhT, École Polytechnique, 91128 Palaiseau, France FR
  3. 3.Bogoliubov Laboratory of Theoretical Physics, JINR, 141980 Dubna, Russia RU

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