scholarly journals Gauge invariance of the deeply virtual Compton scattering amplitude

2000 ◽  
Vol 62 (7) ◽  
Author(s):  
I. V. Anikin ◽  
B. Pire ◽  
O. V. Teryaev
Keyword(s):  
Compton Scattering ◽  
Gauge Invariance ◽  
Scattering Amplitude ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering

scholarly journals On ξ-Process for DVCS-Amplitude

Symmetry ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 1996
Author(s):  
Igor V. Anikin
Keyword(s):  
Compton Scattering ◽  
Gauge Invariance ◽  
Scattering Amplitude ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
Process Implementation

In this note, we demonstrate in detail the ξ-process implementation applied to the deeply virtual Compton scattering amplitude to ensure both the QCD and QED gauge invariance. The presented details are also important for the understanding of the contour gauge used in different processes.

scholarly journals Deeply virtual Compton scattering amplitude in the parton model

2000 ◽  
Vol 491 (1-2) ◽  
pp. 96-100 ◽  
Author(s):  
M. Penttinen ◽  
M.V. Polyakov ◽  
A.G. Shuvaev ◽  
M. Strikman
Keyword(s):  
Compton Scattering ◽  
Scattering Amplitude ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
Parton Model

PARTONIC PICTURE OF GTMDS

2014 ◽  
Vol 25 ◽  
pp. 1460009 ◽  
Author(s):  
SIMONETTA LIUTI ◽  
ABHA RAJAN ◽  
AURORE COURTOY ◽  
GARY R. GOLDSTEIN ◽  
J. OSVALDO GONZALEZ HERNANDEZ
Keyword(s):  
Angular Momentum ◽  
Compton Scattering ◽  
Orbital Angular Momentum ◽  
Scattering Amplitude ◽  
Final State Interaction ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
Matrix Elements ◽  
Final State ◽  
Wigner Distributions

We argue that due to parity constraints, the helicity combination of the purely momentum space counterparts of the Wigner distributions — the generalized transverse momentum distributions — that describes the configuration of an unpolarized quark in a longitudinally polarized nucleon, can enter the deeply virtual Compton scattering amplitude only through matrix elements involving a final state interaction. The relevant matrix elements in turn involve light cone operators projections in the transverse direction, or they appear in the deeply virtual Compton scattering amplitude at twist three. Orbital angular momentum or the spin structure of the nucleon was a major reason for these various distributions and amplitudes to have been introduced. We show that twist three contributions to deeply virtual Compton scattering provide observables related to orbital angular momentum.

scholarly journals A deeply virtual Compton scattering amplitude

2007 ◽  
Vol 645 (2-3) ◽  
pp. 161-166 ◽  
Author(s):  
M. Capua ◽  
S. Fazio ◽  
R. Fiore ◽  
L. Jenkovszky ◽  
F. Paccanoni
Keyword(s):  
Compton Scattering ◽  
Scattering Amplitude ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering

scholarly journals Deconvolution problem of deeply virtual Compton scattering

2021 ◽  
Vol 103 (11) ◽  
Author(s):  
V. Bertone ◽  
H. Dutrieux ◽  
C. Mezrag ◽  
H. Moutarde ◽  
P. Sznajder
Keyword(s):  
Compton Scattering ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
Deconvolution Problem

scholarly journals Incoherent deeply virtual Compton scattering off He4

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
Sara Fucini ◽  
Sergio Scopetta ◽  
Michele Viviani
Keyword(s):  
Compton Scattering ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering
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