HackerPapers

arXiv:1301.3819hep-ph

On timelike and spacelike deeply virtual Compton scattering at next to leading order

H. Moutarde, B. Pire, F. Sabatie, L. Szymanowski, J. Wagner

Early discovery. Linked by one identifiable commenter. This paper is outside the main ranking; a mention is not an endorsement.

Abstract

We study timelike and spacelike virtual Compton scattering in the generalized Bjorken scaling regime at next to leading order in the strong coupling constant, in the medium energy range which will be studied intensely at JLab12 and in the COMPASS-II experiment at CERN. We show that the Born amplitudes get sizeable O(α_s) corrections and, even at moderate energies, the gluonic contributions are by no means negligible. We stress that the timelike and spacelike cases are complementary and that their difference deserves much special attention.

arXiv comments
Journal reference
DOI
doi:10.1103/PhysRevD.87.054029
Subjects
hep-phHigh Energy Physics, Phenomenology

On Hacker News

Linked by 1 identifiable commenter in 1 comment across 1 thread, from Jul 2023 to Jul 2023.

Comments linking this paper, per year.

Discussed in comments1 thread

  1. A physicist who bets that gravity can’t be quantized 1 comment

    • Compton scattering with a space-like separation for the absorption and emission points are a well known phenomenon in quantum field theory. Classically these events would be causally disconnected, but in a QFT the propagator is non-zero and instead has an exponential suppression…

      eigenspaceView on HNParent context

Submitted to Hacker News

Connected through shared HN threads, not inferred similarity or a recommendation.