2013/01/31 by B. Z. Kopeliovich, Ivan Schmidt, M. Siddikov · 3 citations
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1103/physrevd.87.033008
published as Phys. Rev. D 87 (2013), 033008 · 15 pages, 4 Figures. We provide a code which can be used for evaluations with various GPD parametrizations (see "Ancillary files" attached to this arXiv preprint). Version 2: Minor corrections, matches published version
arxiv created 2013/03/10 · arxiv updated 2013/03/12
We study the electromagnetic Bethe-Heitler type contribution to neutrino-induced deeply virtual meson production (\nuDVMP). Such O(αem)-corrections decrease with Q2 in the Bjorken regime less steeply than the standard \nuDVMP handbag contribution. Therefore, they are relatively enhanced at high Q2. The Bethe-Heitler terms give rise to an angular correlation between the lepton and hadron scattering planes with harmonics sensitive to the real and imaginary parts of the DVMP amplitude. These corrections constitute a few percent effect in the kinematics of the forthcoming Minerva experiment at Fermilab and should be taken into account in precision tests of GPD parametrizations. For virtualities Q2~100 GeV2 these corrections become on a par with DVMP handbag contributions. A computational code, which can be used for the evaluation of these corrections employing various GPD models is provided.