Space- and time-like electromagnetic pion form factors in light-cone pQCD

Details Space- and time-like electromagnetic pion form factors in light-cone pQCD Space- and time-like electromagnetic pion form factors in light-cone pQCD

2009-08-20

arxiv.org/abs/0908.2973v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 3 figures

Scientific paper

We present a combined analysis of the space- and time-like electromagnetic pion form factors in light-cone perturbative QCD with transverse momentum dependence and Sudakov suppression. Including the non-perturbative ``soft' QCD and power suppressed twist-3 corrections to the standard twist-2 perturbative QCD result, the experimental pion data available at moderate energies/momentum transfers can be explained reasonably well. This may help towards resolving the bulk of the existing discrepancy between the space- and time-like experimental data.

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