3D Structure of the Nucleon: GPDs and Form Factors

Sep 14, Ferrara, Italy

Conveners: Cédric Lorcé & Silvia Niccolai

Contributions

14 presentations in 5 parallel sessions + 1 plenary talk

4 theory talks

10 experimental talks

Maxim Polyakov (Ruhr Universität Bochum, Germany)Tanmay Maji (IIT Bombay, India) CanceledBarbara Pasquini (Università di Pavia, Italy)Oleg Teryaev (JINR, Russia)

Andrea Ferrero (CEA-Saclay/IRFU/DPhN, France)Shengying Zhao (IPNO, France)Meriem Benali (LPC Caen, France)Nikos Sparveris (Temple University, USA)Qin-Tao Song (Sokendai/KEK, Japan)Frédéric Georges (IPNO, France)Bohdan Marianski (National Center for Nuclear Research, Poland)Valery Kubarovsky (Jlab, USA)Gunar Schnell (University of the Basque Country UPV/EHU, Spain)Eric Fuchey (University of Connecticut, USA)

Simonetta Liuti (University of Virginia, USA)

Hadron imaging

GTMDs

TMDs

FFs

Charges

GPDs

PDFs

Impact-parameter distributions

GPDs

FFs

GTMDs

Elastic scattering

Hard exclusive processes

Complicated hard exclusive processes ?

Andrea Ferrero

Andrea Ferrero

COMPASS 2012 data

xB dependence of t-slope

10x more statistics expectedfrom 2016-17 data taking

Valery Kubarovsky

CLAS data

New CLAS12 detector just beganto take data with 10.6 GeV e beam

DVCS

First DVCS experiment at 11 GeV

Frédéric GeorgesHall A

Valery Kubarovsky

t dependence of p0 production + comparison with GPD models

Andrea Ferrero

Flavor dependence of Compton FFs

Valery Kubarovsky

p0 and h production

Hall BHall A

Meriem Benalin and d DVCS

Eric Fucheyw/ p tagging @11 GeV

Comparison of Spin Density Matrix Elements for vector mesons

Gunar Schnell

Unnatural parity exchange dominates for w-> important role of pion pole

Bohdan Marianski

Nikos Sparveris

Puzzle with proton electric polarizability from VCS

Nikos Sparveris

New JLab experiment@ Hall C

Puzzle with proton electric polarizability from VCS

Mechanical properties

Shear stress

Normal stress (pressure)

Energydensity

Energyflux

Momentum density

Momentumflux

Maxim Polyakov

Pressure force distributions

Equilibrium

Stability

Radial and tangential forces

Oleg Teryaev

Gravitation FFs and equivalence principle

cQCD

LHPC/SESAM

Barbara Pasquini

Prediction from Dispersion Relations for nucleon target

Recent experimental extraction

Qin-Tao Song

GDA model for pion target

Comparison with Belle data

Pion gravitational FFs

Shengying Zhao

Feasability studies@ JLab 12GeV

• Challenging luminosity (1037 cm-2 s-1)• Sign change predicted for beam spin asymmetry DsLU

when Q’2>Q2

Gravitational FFs requires x dependence of GPDs

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LIGHT CONE 2019Ecole polytechnique, France16-20 Sep 2019