Odderon and photon exchange in pseudoscalar meson production
We consider exclusive π0 production in ep-scattering. At high energies odderon and photon exchange contribute. The photon exchange contribution is evaluated exactly using data for the total virtual photon-proton absorption cross section. The odderon exchange contribution is calculated in nonperturba...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
16 August 2000
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| In: |
Nuclear physics. Proceedings supplements
Year: 1999, Volume: 79, Issue: 1, Pages: 352-354 |
| ISSN: | 1873-3832 |
| DOI: | 10.1016/S0920-5632(99)00721-5 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1016/S0920-5632(99)00721-5 Verlag, Volltext: http://www.sciencedirect.com/science/article/pii/S0920563299007215 
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| Author Notes: | E.R. Berger and O. Nachtmann, Theoretische Physik, Universität Heidelberg, Philosophenweg 16, D-69120 Heidelberg, Germany |
| Summary: | We consider exclusive π0 production in ep-scattering. At high energies odderon and photon exchange contribute. The photon exchange contribution is evaluated exactly using data for the total virtual photon-proton absorption cross section. The odderon exchange contribution is calculated in nonperturbative QCD, using functional integral techniques and the model of the stochastic vacuum. For the proton we assume a quark-diquark structure as suggested by the small odderon amplitude in pp and pp forward scattering. We show that odderon exchange leads to a much larger inelastic than elastic π0 production cross section. Observing our process at HERA would establish the soft odderon. |
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| Item Description: | Gesehen am 07.03.2018 |
| Physical Description: | Online Resource |
| ISSN: | 1873-3832 |
| DOI: | 10.1016/S0920-5632(99)00721-5 |