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6 papers · 2 filters
DVCS amplitude at tree level: Transversality, twist-3, and factorization
A. V. Radyushkin, C. Weiss
We study the virtual Compton amplitude in the generalized Bjorken region (q^2 -> Infinity, t small) in QCD by means of a light-cone expansion of the product of e.m. currents in str…
DVCS amplitude with kinematical twist-3 terms
A. V. Radyushkin, C. Weiss
We compute the amplitude of deeply virtual Compton scattering (DVCS) using the calculus of QCD string operators in coordinate representation. To restore the electromagnetic gauge i…
Renormalons as dilatation modes in the functional space
A. Babansky, I. Balitsky
There are two sources of the factorial large-order behavior of a typical perturbative series. First, the number of the different Feynman diagrams may be large; second, there are ab…
Measurements of the -Dependence of the Proton and Neutron Spin Structure Functions g1p and g1n
The E155 Collaboration, P. L. Anthony
The structure functions g1p and g1n have been measured over the range 0.014 < x < 0.9 and 1 < Q2 < 40 GeV2 using deep-inelastic scattering of 48 GeV longitudinally polarized electr…
Form Factors and QCD in Spacelike and Timelike Region
A. P. Bakulev, A. V. Radyushkin, N. G. Stefanis
We analyze the basic hard exclusive processes: πγ*γ- transition, pion and nucleon electromagnetic form factors, and discuss the analytic continuation of QCD formulas from the space…
Deeply virtual Compton scattering at small x
I. Balitsky, E. Kuchina
We calculate the cross section of the deeply virtual Compton scattering at large energies and intermediate momentum transfers.