Benić, Sanjin; Dumitru, Adrian; Kaushik, Abhiram; Motyka, Leszek; Stebel, Tomasz (2024) Photon-odderon interference in exclusive χc charmonium production at the Electron-Ion Collider. Physical Review D, 110 (1). ISSN 2470-0010
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Abstract
Exclusive C = +1 scalar, axial-vector, and tensor quarkonium production in high-energy electronproton scattering requires a C-odd t-channel exchange of a photon or a three-gluon ladder. We derive the expressions for the corresponding amplitudes. The relative phase of the photon vs three-gluon exchange amplitudes is determined by the sign of the light-front matrix element of the eikonal color current operator dabcJ+aJ+bJ+c at moderate x, and is not affected by small-x QCD evolution. Model calculations predict constructive interference, which is particularly strong for momentum transfer t similar to 1 GeV2 where the cross section for chi cJ production exceeds that for pure photon exchange by up to a factor of 4. Exclusive chi cJ electroproduction at the high luminosity Electron-Ion Collider occurs with well measurable rates and measurements of these processes should find evidence for the perturbative odderon exchange. We also compute the total electroproduction cross section as a function of energy and provide first estimates of the number of chi cJ events per month at the Electron-Ion Collider design luminosity.
| Item Type: | Article | ||||||||
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| Uncontrolled Keywords: | Photon-odderon interference; Electron-Ion Collider; Vector-meson; Wave-function; Electroproduction; Pomeron; PP; Singularity; Scattering; Equation; Exchange; Behavior | ||||||||
| Subjects: | NATURAL SCIENCES > Physics | ||||||||
| Divisions: | Center for Informatics and Computing | ||||||||
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| Depositing User: | Lorena Palameta | ||||||||
| Date Deposited: | 17 Mar 2026 15:05 | ||||||||
| URI: | http://fulir.irb.hr/id/eprint/11357 | ||||||||
| DOI: | 10.1103/PhysRevD.110.014025 |
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