The total virtual photoabsorption cross section, deeply virtual Compton scattering and vector-meson production

2004 ◽  
Vol 37 (2) ◽  
pp. 205-222 ◽  
Author(s):  
M. Kuroda ◽  
D. Schildknecht
Keyword(s):  
Vector Meson ◽  
Compton Scattering ◽  
Cross Section ◽  
Meson Production ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
Photoabsorption Cross Section ◽  
Vector Meson Production

Exclusive Vector Meson Production and Deep Virtual Compton Scattering in Electron-Ion Collisions

2010 ◽  
Author(s):  
E. R. Cazaroto ◽  
F. Carvalho ◽  
M. S. Kugeratski ◽  
V. P. Gonçalves ◽  
F. S. Navarra ◽  
...  
Keyword(s):  
Vector Meson ◽  
Compton Scattering ◽  
Meson Production ◽  
Virtual Compton Scattering ◽  
Vector Meson Production ◽  
Ion Collisions ◽  
Deep Virtual Compton Scattering

scholarly journals Program of COMPASS-II at CERN

2015 ◽  
Vol 37 ◽  
pp. 1560063 ◽  
Author(s):  
A. Sandacz
Keyword(s):  
Compton Scattering ◽  
Charged Pion ◽  
Meson Production ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
Compass Collaboration ◽  
Liquid Hydrogen Target ◽  
Muon Scattering ◽  
Hydrogen Target ◽  
Polarized Protons

COMPASS collaboration has started in 2012 a five-year program of new measurements, which are outlined in the 'COMPASS-II' proposal. The two new major projects of the proposal are measurements of polarized Drell-Yan process in π- scattering off transversely polarized protons and studies of GPDs via measurements of Deeply Virtual Compton Scattering and Hard Exclusive Meson Production in muon scattering off a liquid hydrogen target. In addition, high statistics SIDSI measurements with muon beams and a study of charged pion and kaon polarizabilities via Primakoff reactions with hadron beams are also foreseen as a part of this program.

scholarly journals On the Interplay between Q2 and t Dependences in Exclusive Diffractive Production of Real Photons and Vector Mesons in ep Collisions

2012 ◽  
Vol 57 (12) ◽  
pp. 1197
Author(s):  
R. Fiore ◽  
L.L. Jenkovszky ◽  
A. Lavorini ◽  
V.K. Magas
Keyword(s):  
Mass Shell ◽  
Scattering Amplitude ◽  
Meson Production ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
Photon Virtuality ◽  
Vector Meson Production ◽  
Diffractive Production ◽  
Mandelstam Analyticity ◽  
Free Parameters

We show how the familiar phenomenological way of combining the Q2 (photon virtuality) and t (squared momentum transfer) dependences of the scattering amplitude in Deeply Virtual Compton Scattering (DVCS) [1, 2] and Vector Meson Production (VMP) [2] processes can be understood in an off-mass-shell generalization of dual amplitudes with Mandelstam analyticity [3]. By comparingdifferent approaches, we managed also to constrain the numerical values of the free parameters.

scholarly journals Higher-order kinematical effects in deeply virtual Compton scattering

2021 ◽  
Vol 2021 (12) ◽  
Author(s):  
Yuxun Guo ◽  
Xiangdong Ji ◽  
Kyle Shiells
Keyword(s):  
Compton Scattering ◽  
Cross Section ◽  
Light Cone ◽  
Form Factors ◽  
Deeply Virtual Compton Scattering ◽  
Virtual Compton Scattering ◽  
Higher Order ◽  
Cross Section Formula ◽  
The Cross ◽  
Compton Form Factors

Abstract We study the deeply virtual Compton scattering cross-section in twist-two generalized parton distribution (GPD) approximation, and show that different choices of light-cone vectors and gauges for the final photon polarization will lead to different higher-order kinematical corrections to the cross-section formula. The choice of light-cone vectors affects kinematic corrections at the twist-three level, accounting for the differences between the cross-section formulas in the literature. On the other hand, kinematical corrections from higher-twist GPDs should eliminate the light-cone dependence at twist three. Those light-cone dependencies are studied systematically at JLab 12 GeV and future EIC kinematics. They serve as the intrinsic systematic uncertainties in extracting the Compton form factors through the cross-section formula. More importantly, they are also necessary for understanding cross-section measurements with higher-twist precision and to reconstruct higher-order Compton form factors.

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