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We give a short overview of recent developments in understanding of the deeply virtual Compton scattering on the proton target.

High Energy Physics - Phenomenology · Physics 2007-05-23 A. V. Belitsky , D. Müller

The impact of potential future measurements of beam charge asymmetries on the current knowledge of Compton form factors is evaluated. Elaborating on the results of a global neural network fit to deeply virtual Compton scattering data, a…

High Energy Physics - Phenomenology · Physics 2021-09-01 H. Dutrieux , V. Bertone , H. Moutarde , P. Sznajder

We further analyze the holographic dipole-dipole scattering amplitude developed in arXiv:1202.0831, 1205.3223. Gribov diffusion at strong coupling yields the scattering amplitude in a confining background. We compare the holographic result…

Nuclear Theory · Physics 2012-10-16 Alexander Stoffers , Ismail Zahed

Within the framework of the Color Glass Condensate model, we evaluate quark and gluon Generalized Parton Distributions (GPDs) and the cross section of Deeply Virtual Compton Scattering (DVCS) in the small-$x_{B}$ region. We demonstrate that…

High Energy Physics - Phenomenology · Physics 2008-11-26 K. Goeke , V. Guzey , M. Siddikov

Virtual Compton Scattering on the nucleon: $\gamma^* N \to \gamma N$ is a new and rapidly developing field at low and high energies. This lecture is about the low energy part, i.e. for energies in the $(\gamma p)$ center-of-mass mainly up…

High Energy Physics - Phenomenology · Physics 2008-12-18 H. Fonvieille

Recent results on prompt photon production and Deeply Virtual Compton Scattering (DVCS) from ZEUS and H1 experiments are presented.

High Energy Physics - Experiment · Physics 2007-05-23 X. Janssen

We extend the analysis of the deeply virtual Compton scattering process to the weak interaction sector in the generalized Bjorken limit. The virtual Compton scattering amplitudes for the weak neutral and charged currents are calculated at…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Psaker , W. Melnitchouk , A. V. Radyushkin

Background: Generalized polarizabilities (GPs) are important observables to describe the nucleon structure, and measurements of these observables are still scarce. Purpose: This paper presents details of a virtual Compton scattering (VCS)…

In the framework of collinear QCD factorization, the leading twist scattering amplitudes for deeply virtual Compton scattering (DVCS) and timelike Compton scattering (TCS) are intimately related thanks to analytic properties of leading and…

High Energy Physics - Phenomenology · Physics 2020-03-18 O. Grocholski , H. Moutarde , B. Pire , P. Sznajder , J. Wagner

A factorized Regge-pole model for deeply virtual Compton scattering is suggested. The use of an effective logarithmic Regge-Pomeron trajectory provides for the description of both ``soft'' (small $|t|$) and ``hard'' (large $|t|$) dynamics.…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Capua , S. Fazio , R. Fiore , L. Jenkovszky , F. Paccanoni

We calculate the kinematic twist-3 and 4 corrections to the leading order amplitude of timelike Compton scattering (TCS) on a (pseudo-)scalar target, in the recently developed framework based on the conformal operator-product expansion.…

High Energy Physics - Phenomenology · Physics 2025-03-05 V. Martinez-Fernandez , B. Pire , P. Sznajder , J. Wagner

An overview of the current status of and possible future theoretical, phenomenological and experimental studies of DVCS and SPD's is presented.

High Energy Physics - Phenomenology · Physics 2009-10-31 Zhang Chen

Exclusive photoproduction of dileptons, gamma N ->l+l- N, is and will be measured in ultraperipheralcollisions at hadron colliders. We demonstrate that the timelike deeply virtual Compton scattering (TCS) mechanism gamma q -> l+l- q, where…

High Energy Physics - Phenomenology · Physics 2014-11-18 B. Pire , L. Szymanowski , J. Wagner

Exclusive photoproduction of dileptons, gamma N ->l+l- N, is and will be measured in ultraperipheral collisions at hadron colliders. We demonstrate that the timelike deeply virtual Compton scattering (TCS) mechanism gamma q -> l+l- q, where…

High Energy Physics - Phenomenology · Physics 2009-06-30 B. Pire , L. Szymanowski , J. Wagner

The amplitude of the deeply virtual Compton scattering off nucleon is computed to the twist-3 accuracy in the Wandzura-Wilczek (WW) approximation. The result is presented in the form which can be easily used for the analysis of DVCS…

High Energy Physics - Phenomenology · Physics 2009-10-31 N. Kivel , M. V. Polyakov

We study photoabsorption reaction and real Compton scattering (RCS) within the color dipole model. We rely on a photon wave function derived in the instanton vacuum model, and on the energy dependent phenomenological elastic dipole…

High Energy Physics - Phenomenology · Physics 2009-09-24 B. Z. Kopeliovich , Ivan Schmidt , M. Siddikov

An analysis of Deeply Virtual Compton Scattering (DVCS) is made within the colour dipole model. We compare and contrast two models for the dipole cross-section which have been successful in describing structure function data. Both models…

High Energy Physics - Phenomenology · Physics 2011-09-13 M. McDermott , R. Sandapen , G. Shaw

We estimate the impact of asymmetry measurements of Deeply Virtual Compton Scattering (DVCS) with transversely polarized proton beam taken at a future Electron Ion Collider in China (EicC) on the extraction of Compton Form Factors (CFFs).…

High Energy Physics - Phenomenology · Physics 2023-06-22 Xu Cao , Jinlong Zhang

We report the first results of the beam spin asymmetry measured in the reaction e + p -> e + p + gamma at a beam energy of 4.25 GeV. A large asymmetry with a sin(phi) modulation is observed, as predicted for the interference term of Deeply…

High Energy Physics - Experiment · Physics 2010-04-06 CLAS Collaboration , S. Stepanyan

In the following note, we will present an estimation of the single spin asymmetry in deeply virtual Compton scattering (DVCS) which directly allows one to test predictions of the ratio of the imaginary part of the amplitude in DIS to DVCS,…

High Energy Physics - Phenomenology · Physics 2010-01-06 A. Freund , M. Strikman