Is there window for "supersoft" Pomeron in $J/ψ$ photoproduction at low energy?

Details Is there window for "supersoft" Pomeron in $J/ψ$ photoproduction at low energy? Is there window for "supersoft" Pomeron in $J/ψ$ photoproduction at low energy?

1999-10-12

arxiv.org/abs/hep-ph/9910307v1

Prog.Theor.Phys. 103 (2000) 747-753

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages including 2 figs

Scientific paper

10.1143/PTP.103.747

The low energy $J/\psi$ photoproduction cross-section has been studied on the basis of the Pomeron model. To incorporate the discrepancy between experimental data and the predictionns by the conventional models, i.e. the sum of the soft Pomeron with intercept 1.08 and the hard Pomeron with intercept 1.418, a Regge trajectory associated with a scalar meson (f,a) exchange which we call "supersoft" Pomeron, is introduced additionally. To distinguish between the conventional model and this new additional Pomeron, observations related to other polarization observables in upcoming polarized experiments are discussed.

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