A deeply virtual Compton scattering amplitude

Capua, M.; Fazio, S.; Fiore, R.; Jenkovszky, L. L.; Paccanoni, F.

doi:10.1016/j.physletb.2006.12.018

Cited by 26 publications

(73 citation statements)

References 32 publications

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“…As is well known, wide-angle scaling behavior of the amplitude requires a logarithmic asymptotic behavior of the trajectory. More details on this interesting subject can be found in a recent paper [23] and references therein.…”

Section: Regge Asymptotic Behavior and The Pomeron Trajectorymentioning

confidence: 99%

DiffractiveJ/ψphotoproduction in a dual model

et al. 2007

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J= photoproduction is studied in the framework of the analytic S-matrix theory. The differential and integrated elastic cross sections for J= photoproduction are calculated from a dual amplitude with Mandelstam analyticity. It is argued that, at low energies, the background, which is the low-energy equivalent of the high-energy diffraction, replaces the Pomeron exchange. The onset of the high-energy Pomeron dominance is estimated from the fits to the data.

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Section: Regge Asymptotic Behavior and The Pomeron Trajectorymentioning

confidence: 99%

DiffractiveJ/ψphotoproduction in a dual model

et al. 2007

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“…tions can be well fitted in terms of simple functions of Q 2 and the center of mass energy, W rather then Q 2 and x B [31][32][33].…”

Section: Fig 1: Handbag Diagram Representation Of the Compton Amplitudementioning

confidence: 99%

Quark-nucleon dynamics and deep virtual Compton scattering

Szczepaniak

2010

Phys. Rev. D

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“…Models based on the Regge phenomenology have been proposed to describe the Deeply Virtual Compton Scattering (DVCS) amplitude [1,2,3,4]. DVCS measurements are an important source in extracting information about General Parton Distributions (GPDs).…”

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confidence: 99%

“…[1] and applied in Ref. [6] to the high-energy data on DVCS collected by the H1 and ZEUS detectors at HERA [7,8,9].…”

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Deeply virtual Compton scattering and generalized parton distributions

Fazio¹,

Fiore²,

Jenkovszky

2009

AIP Conference Proceedings

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Abstract. We present a comparison of a recently proposed model, which describes the Deeply Virtual Compton Scattering amplitude, to the HERA data. Keywords:Compton scattering, Regge poles, Pomeron, parton distributions PACS: 12.38. Bx, 12.39.St, Exclusive production of a real photon, a vector meson or lepton pairs via deeply virtual scattering, ep → eV p, where V stands generically for produced particles, is an interesting tool to investigate the diffractive properties of the Pomeron.The linear Regge-trajectory of the Pomeron is,where t is the squared four-momentum transferred at the proton vertex and Q 2 is the virtuality of the exchanged photon. The standard Regge pole parametrization of the scattering amplitude iswhere s = W 2 is the squared γ * p centre-of-mass energy, s 0 = 1 GeV 2 and B(t, Q 2 ) is related to the radius associated with the proton vertex. Models based on the Regge phenomenology have been proposed to describe the Deeply Virtual Compton Scattering (DVCS) amplitude [1,2,3,4]. DVCS measurements are an important source in extracting information about General Parton Distributions (GPDs). These distributions can offer a holographic picture of the nucleon.The DVCS data collected at the lepton-proton collider HERA can help to understand the properties of the Pomeron trajectory. There are many papers discussing in details the form and the values of the parameters of the Pomeron trajectory as well as their possible Q 2 dependence (for a recent review, see, e.g. [5]).In the present paper we compare the model described in Ref.[1] and applied in Ref.[6] to the high-energy data on DVCS collected by the H1 and ZEUS detectors at HERA [7,8,9]. The model makes use of a logarithmic Pomeron Trajectory. The scattering amplitude has the form [1,6]

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A deeply virtual Compton scattering amplitude

Cited by 26 publications

References 32 publications

DiffractiveJ/ψphotoproduction in a dual model

DiffractiveJ/ψphotoproduction in a dual model

Quark-nucleon dynamics and deep virtual Compton scattering

Deeply virtual Compton scattering and generalized parton distributions

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