Related papers: The Generalized Parton Distributions program at Je…

Systematic description of hadron's response to non-local QCD probes: Froissart-Gribov projections in analysis of deeply virtual Compton scattering

We revisit the application of the Froissart-Gribov (FG) projections in the analysis of amplitudes for the Deeply Virtual Compton Scattering (DVCS), providing essential information on generalized parton distributions (GPDs). The pivotal role…

High Energy Physics - Phenomenology · Physics 2025-11-20 Kirill M. Semenov-Tian-Shansky , Paweł Sznajder

Beam Spin Asymmetries in DVCS with CLAS at 4 .8 GeV

We report measurements of the beam spin asymmetry in Deeply Virtual Compton Scattering (DVCS) at an electron beam energy of 4.8 GeV using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The DVCS beam spin asymmetry…

High Energy Physics - Experiment · Physics 2019-08-13 G. Gavalian

Virtual Compton Scattering and the Generalized Polarizabilities of the Proton at Q^2=0.92 and 1.76 GeV^2

Virtual Compton Scattering (VCS) on the proton has been studied at Jefferson Lab using the exclusive photon electroproduction reaction (e p --> e p gamma). This paper gives a detailed account of the analysis which has led to the…

Nuclear Experiment · Physics 2013-05-30 H. Fonvieille , G. Laveissiere , N. Degrande , S. Jaminion , C. Jutier , L. Todor , R. Di Salvo , L. Van Hoorebeke , L. C. Alexa , B. D. Anderson , K. A. Aniol , K. Arundell , G. Audit , L. Auerbach , F. T. Baker , M. Baylac , J. Berthot , P. Y. Bertin , W. Bertozzi , L. Bimbot , W. U. Boeglin , E. J. Brash , V. Breton , H. Breuer , E. Burtin , J. R. Calarco , L. S. Cardman , C. Cavata , C. -C. Chang , J. -P. Chen , E. Chudakov , E. Cisbani , D. S. Dale , C. W. deJager , R. De Leo , A. Deur , N. d'Hose , G. E. Dodge , J. J. Domingo , L. Elouadrhiri , M. B. Epstein , L. A. Ewell , J. M. Finn , K. G. Fissum , G. Fournier , B. Frois , S. Frullani , C. Furget , H. Gao , J. Gao , F. Garibaldi , A. Gasparian , S. Gilad , R. Gilman , A. Glamazdin , C. Glashausser , J. Gomez , V. Gorbenko , P. Grenier , P. A. M. Guichon , J. O. Hansen , R. Holmes , M. Holtrop , C. Howell , G. M. Huber , C. E. Hyde , S. Incerti , M. Iodice , J. Jardillier , M. K. Jones , W. Kahl , S. Kato , A. T. Katramatou , J. J. Kelly , S. Kerhoas , A. Ketikyan , M. Khayat , K. Kino , S. Kox , L. H. Kramer , K. S. Kumar , G. Kumbartzki , M. Kuss , A. Leone , J. J. LeRose , M. Liang , R. A. Lindgren , N. Liyanage , G. J. Lolos , R. W. Lourie , R. Madey , K. Maeda , S. Malov , D. M. Manley , C. Marchand , D. Marchand , D. J. Margaziotis , P. Markowitz , J. Marroncle , J. Martino , K. McCormick , J. McIntyre , S. Mehrabyan , F. Merchez , Z. E. Meziani , R. Michaels , G. W. Miller , J. Y. Mougey , S. K. Nanda , D. Neyret , E. A. J. M. Offermann , Z. Papandreou , B. Pasquini , C. F. Perdrisat , R. Perrino , G. G. Petratos , S. Platchkov , R. Pomatsalyuk , D. L. Prout , V. A. Punjabi , T. Pussieux , G. Quemener , R. D. Ransome , O. Ravel , J. S. Real , F. Renard , Y. Roblin , D. Rowntree , G. Rutledge , P. M. Rutt , A. Saha , T. Saito , A. J. Sarty , A. Serdarevic , T. Smith , G. Smirnov , K. Soldi , P. Sorokin , P. A. Souder , R. Suleiman , J. A. Templon , T. Terasawa , R. Tieulent , E. Tomasi-Gustaffson , H. Tsubota , H. Ueno , P. E. Ulmer , G. M. Urciuoli , M. Vanderhaeghen , R. L. J. Van der Meer , R. Van De Vyver , P. Vernin , B. Vlahovic , H. Voskanyan , E. Voutier , J. W. Watson , L. B. Weinstein , K. Wijesooriya , R. Wilson , B. B. Wojtsekhowski , D. G. Zainea , W. -M. Zhang , J. Zhao , Z. -L. Zhou

Deeply Virtual Compton Scattering on the Deuteron

We study deeply virtual Compton scattering (DVCS) on a deuteron target. We model the Generalized Quark Distributions in the deuteron by using the impulse approximation for the lowest Fock-space state. Numerical predictions are given for the…

High Energy Physics - Phenomenology · Physics 2009-11-07 F. Cano , B. Pire

Generalized parton distributions from the pseudo-distribution approach on the lattice

Generalized parton distributions (GPDs) are key quantities for the description of a hadron's three-dimensional structure. They are the current focus of all areas of hadronic physics -- phenomenological, experimental, and theoretical,…

High Energy Physics - Lattice · Physics 2024-09-05 Shohini Bhattacharya , Krzysztof Cichy , Martha Constantinou , Andreas Metz , Niilo Nurminen , Fernanda Steffens

Deeply virtual Compton scattering cross section at high Bjorken $x_B$

We report high-precision measurements of the Deeply Virtual Compton Scattering (DVCS) cross section at high values of the Bjorken variable $x_B$. DVCS is sensitive to the Generalized Parton Distributions of the nucleon, which provide a…

High Energy Physics - Phenomenology · Physics 2022-07-13 F. Georges , M. N. H. Rashad , A. Stefanko , M. Dlamini , B. Karki , S. F. Ali , P-J. Lin , H-S Ko , N. Israel , D. Adikaram , Z. Ahmed , H. Albataineh , B. Aljawrneh , K. Allada , S. Allison , S. Alsalmi , D. Androic , K. Aniol , J. Annand , H. Atac , T. Averett , C. Ayerbe Gayoso , X. Bai , J. Bane , S. Barcus , K. Bartlett , V. Bellini , R. Beminiwattha , J. Bericic , D. Biswas , E. Brash , D. Bulumulla , J. Campbell , A. Camsonne , M. Carmignotto , J. Castellano , C. Chen , J-P. Chen , T. Chetry , M. E. Christy , E. Cisbani , B. Clary , E. Cohen , N. Compton , J. C. Cornejo , S. Covrig Dusa , B. Crowe , S. Danagoulian , T. Danley , F. De Persio , W. Deconinck , M. Defurne , C. Desnault , D. Di , M. Duer , B. Duran , R. Ent , C. Fanelli , G. Franklin , E. Fuchey , C. Gal , D. Gaskell , T. Gautam , O. Glamazdin , K. Gnanvo , V. M. Gray , C. Gu , T. Hague , G. Hamad , D. Hamilton , K. Hamilton , O. Hansen , F. Hauenstein , W. Henry , D. W. Higinbotham , T. Holmstrom , T. Horn , Y. Huang , G. M. Huber , C. Hyde , H. Ibrahim , C-M. Jen , K. Jin , M. Jones , A. Kabir , C. Keppel , V. Khachatryan , P. M. King , S. Li , W. B. Li , J. Liu , H. Liu , A. Liyanage , J. Magee , S. Malace , J. Mammei , P. Markowitz , E. McClellan , M. Mazouz , F. Meddi , D. Meekins , K. Mesik , R. Michaels , A. Mkrtchyan , R. Montgomery , C. Muñoz Camacho , L. S. Myers , P. Nadel-Turonski , S. J. Nazeer , V. Nelyubin , D. Nguyen , N. Nuruzzaman , M. Nycz , O. F. Obretch , L. Ou , C. Palatchi , B. Pandey , S. Park , K. Park , C. Peng , R. Pomatsalyuk , E. Pooser , A. J. R. Puckett , V. Punjabi , B. Quinn , S. Rahman , P. E. Reimer , J. Roche , I. Sapkota , A. Sarty , B. Sawatzky , N. H. Saylor , B. Schmookler , M. H. Shabestari , A. Shahinyan , S. Sirca , G. R. Smith , S. Sooriyaarachchilage , N. Sparveris , R. Spies , T. Su , A. Subedi , V. Sulkosky , A. Sun , L. Thorne , Y. Tian , N. Ton , F. Tortorici , R. Trotta , G. M. Urciuoli , E. Voutier , B. Waidyawansa , Y. Wang , B. Wojtsekhowski , S. Wood , X. Yan , L. Ye , Z. Ye , C. Yero , J. Zhang , Y. Zhao , P. Zhu

Generalized parton distributions of hadrons with composite constituents

A method is described for calculating the Generalized Parton Distributions (GPDs) of spin 1/2 hadrons made of composite constituents, in an Impulse Approximation framework. GPDs are obtained from the convolution between the light cone…

High Energy Physics - Phenomenology · Physics 2008-11-26 Sergio Scopetta

Future Measurements of Deeply Virtual Compton Scattering at HERMES

Prospects for future measurements of Deeply Virtual Compton Scattering at HERMES are studied using different simple models for parameterizations of generalized parton distributions (GPDs). Measurements of the lepton charge and lepton beam…

High Energy Physics - Phenomenology · Physics 2011-09-13 V. A. Korotkov , W. -D. Nowak

Probing Spin Dependent Parton Distributions though Deeply Virtual Processes

Spin and transverse momentum dependent parton distributions - Generalized Parton Distributions (GPDs) - are at the interface between the QCD structure of the hadrons and observable quantities. The GPDs are linear superpositions within…

High Energy Physics - Phenomenology · Physics 2015-10-27 Gary R. Goldstein , Simonetta Liuti

Nucleon Tomography and Generalized Parton Distribution at Physical Pion Mass from Lattice QCD

We present the first lattice calculation of the nucleon isovector unpolarized generalized parton distribution (GPD) at the physical pion mass using a lattice ensemble with 2+1+1 flavors of highly improved staggered quarks (HISQ) generated…

High Energy Physics - Phenomenology · Physics 2021-11-10 Huey-Wen Lin

Global Deep Neural Network Modeling of Compton Form Factors Constrained from Local $\chi^2$ Maps Fits

Over the past two decades, intense experimental efforts have focused on measuring observables that contribute to a three-dimensional description of the nucleon. Generalized Parton Distributions provide complementary insights into the…

Nuclear Experiment · Physics 2025-09-24 L. Calero Diaz , D. Keller

GPDs at HERA and perspectives at COMPASS

Measurements of the deep-inelastic scattering (DIS) of leptons and nucleons, $e+p\to e+X$, allow the extraction of Parton Distribution Functions (PDFs) which describe the longitudinal momentum carried by the quarks, anti-quarks and gluons…

High Energy Physics - Phenomenology · Physics 2014-11-20 Laurent Schoeffel

Generalized parton distributions and composite constituent quarks

An approach is proposed to calculate Generalized Parton Distributions (GPDs) in a Constituent Quark Model (CQM) scenario, considering the constituent quarks as complex systems. The GPDs are obtained from the wave functions of the non…

High Energy Physics - Phenomenology · Physics 2011-02-01 Sergio Scopetta , Vicente Vento

GUMP1.0 -- First global extraction of generalized parton distributions from experiment and lattice data with NLO accuracy

We report the first global extraction of generalized parton distributions (GPDs), GUMP1.0, by combining deeply virtual Compton scattering and $\rho$-meson production data from Jefferson Lab and Hadron-Electron Ring Accelerator with global…

High Energy Physics - Phenomenology · Physics 2025-09-11 Yuxun Guo , Fatma P. Aslan , Xiangdong Ji , M. Gabriel Santiago

Deeply Virtual Electroproduction of Photons and Mesons

In this paper, after a brief summary of the properties of the Off-Forward Parton Distributions, we give some examples of what could be the experimental opportunities to access them at the current high-energy lepton facilities : JLab (E_e >=…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Guidal , M. Vanderhaeghen

Measurement of the Generalized Polarizabilities of the Proton in Virtual Compton Scattering at Q2=0.92 and 1.76 Gev2: II. Dispersion Relation Analysis

Virtual Compton Scattering is studied at the Thomas Jefferson National Accelerator Facility in the energy domain below pion threshold and in the Delta(1232) resonance region. The data analysis is based on the Dispersion Relation (DR)…

High Energy Physics - Phenomenology · Physics 2007-05-23 The Jefferson Lab Hall A Collaboration , G. Laveissiere

Nucleon Helicity Generalized Parton Distribution at Physical Pion Mass from Lattice QCD

The generalized parton distributions (GPDs) offer a window on three-dimensional imaging of the nucleon, providing understanding of how the fundamental properties of the nucleon, such as its mass and spin, arise from the underlying quark and…

High Energy Physics - Lattice · Physics 2021-12-15 Huey-Wen Lin

Theoretical description of deeply virtual Compton scattering off $^3$He

Recently, coherent deeply virtual Compton scattering (DVCS) off $^3$He nuclei has been proposed to access the neutron generalized parton distributions (GPDs). In Impulse Approximation (IA) studies, it has been shown, in particular, that the…

Nuclear Theory · Physics 2015-06-18 Matteo Rinaldi , Sergio Scopetta

New results in exclusive hard reactions

Generalized Parton Distributions offer a new way to access the quark and gluon nucleon structure. We review recent progress in this domain, emphasizing the need to supplement the experimental study of DVCS by its crossed version, timelike…

High Energy Physics - Phenomenology · Physics 2011-09-27 B. Pire , K. Semenov-Tian-Shansky , L. Szymanowski , J. Wagner

Generalized parton distributions in the context of HERA measurements

We present the recent experimental results from deeply virtual Compton scattering (DVCS) from H1 and ZEUS experiments at HERA. Their interpretation encoded in the generalized parton distributions is discussed.

High Energy Physics - Phenomenology · Physics 2011-07-19 Laurent SCHOEFFEL