Holographic description of elastic photon-proton and photon-photon scattering. (English) Zbl 1540.81159
Summary: We investigate the elastic photon-proton and photon-photon scattering in a holographic QCD model, focusing on the Regge regime. Considering contributions of the Pomeron and Reggeon exchange, the total and differential cross sections are calculated. While our model involves several parameters, by virtue of the universality of the Pomeron and Reggeon, for most of them the values determined in the preceding study on the proton-proton and proton-antiproton scattering can be employed. Once the two adjustable parameters, the Pomeron-photon and Reggeon-photon coupling constant, are determined with the experimental data of the total cross sections, predicting the both cross sections in a wide kinematic region, from the GeV to TeV scale, becomes possible. We show that the total cross section data can be well described within the model, and our predictions for the photon-proton differential cross section are consistent with the data.
MSC:
| 81U05 | \(2\)-body potential quantum scattering theory |
| 81V05 | Strong interaction, including quantum chromodynamics |
| 81T35 | Correspondence, duality, holography (AdS/CFT, gauge/gravity, etc.) |
| 83F05 | Relativistic cosmology |
| 81V25 | Other elementary particle theory in quantum theory |
| 81V35 | Nuclear physics |
| 81-08 | Computational methods for problems pertaining to quantum theory |
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