Instantons and $η$ Meson Production near threshold in NN collisions

Details Instantons and $η$ Meson Production near threshold in NN collisions Instantons and $η$ Meson Production near threshold in NN collisions

1999-05-21

arxiv.org/abs/hep-ph/9905438v2

Phys.Lett. B472 (2000) 247-252

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, latex, 3 figures, revised version, footnotes have been added, the notation of two formulas slightly changed, and con

Scientific paper

10.1016/S0370-2693(99)01440-9

An enhancement for the $\eta$ production in proton-neutron collisions as compared with that in proton-proton scattering has been recently observed. We present a calculation for the production cross section, in proton-neutron collisions near threshold, within instanton model for the QCD vacuum and show that a specific flavor dependent nonperturbative quark-gluon interaction related to instantons is able to explain the observed enhancement.

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