2 citations · 2 across the 3 of their papers we have counts for
6 papers
Measurement of Coherent Emission and Linear Polarization of Photons by Electrons in the Strong Fields of Aligned Crystals
NA59 Collaboration, A. Apyan, R. O. Avakian +27
We present new results regarding the features of high energy photon emission by an electron beam of 178 GeV penetrating a 1.5 cm thick single Si crystal aligned at the Strings-Of-S…
Linear to Circular Polarisation Conversion using Birefringent Properties of Aligned Crystals for Multi-GeV Photons
NA59 Collaboration, A. Apyan, R. O. Avakian +27
We present the first experimental results on the use of a thick aligned Si crystal acting as a quarter wave plate to induce a degree of circular polarisation in a high energy linea…
Coherent Pair Production by Photons in the 20-170 GeV Energy Range Incident on Crystals and Birefringence
NA59 Collaboration, A. Apyan, R. O. Avakian +27
The cross section for coherent pair production by linearly polarised photons in the 20-170 GeV energy range was measured for photon aligned incidence on ultra-high quality diamond…
NLO Exclusive Evolution Kernels
A. V. Belitsky, A. Freund, D. Müller
We outline a formalism used for a construction of two-loop flavor singlet exclusive evolution kernels in the MS bar scheme. The approach is based on the known pattern of conformal…
Exclusive, Hard Diffraction in QCD
Andreas Freund
In the first chapter we give an introduction to hard diffractive scattering in QCD to introduce basic concepts and terminology. In the second chapter we make predictions for the ev…
DVCS at HERA
L. Frankfurt, A. Freund, M. Strikman
We demonstrate that perturbative QCD allows one to calculate the absolute cross section of diffractive exclusive production of photons at large at HERA, while the aligned jet…