Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-01-21
Eur.Phys.J.C9:491-501,1999
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages, 7 figures
Scientific paper
10.1007/s100529900067
We investigate the reaction $e p \to e PS X$ where PS denotes a pseudoscalar meson $\pi^0, \eta, \eta'$, or $\eta_c$ and X either a proton or resonance or continuum states into which the proton can go by diffractive excitation. At high energies photon and odderon exchange contribute to the reaction. 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 $p \bar{p}$ forward scattering. We show that odderon exchange leads to a much larger inelastic than elastic PS production cross section. Observation of our reaction at HERA would establish the soft odderon as an exchange object on an equal footing with the soft pomeron and would give us valuable insight into both the nucleon structure and the mechanism of high energy diffractive scattering.
Berger E. R.
Donnachie Alexander
Dosch Hans Guenter
Kilian Wolfgang
Nachtmann Otto
No associations
LandOfFree
Odderon and photon exchange in electroproduction of pseudoscalar mesons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Odderon and photon exchange in electroproduction of pseudoscalar mesons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Odderon and photon exchange in electroproduction of pseudoscalar mesons will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-545208