Timelike form factors at high energy

Details Timelike form factors at high energy Timelike form factors at high energy

1994-03-15

arxiv.org/abs/hep-ph/9403293v1

Phys.Rev.D51:15-24,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, report DAPNIA/SPhN 94 09

Scientific paper

10.1103/PhysRevD.51.15

The difference between the timelike and spacelike meson form factors is analysed in the framework of perturbative QCD with Sudakov effects included. It is found that integrable singularities appear but that the asymptotic behavior is the same in the timelike and spacelike regions. The approach to asymptotia is quite slow and a rather constant enhancement of the timelike value is expected at measurable large \(Q^{2}\). This is in agreement with the trend shown by experimental data.

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