The antinucleon-nucleon interaction at low energy : annihilation dynamics
classification
✦ hep-ex
hep-phnucl-th
keywords
annihilationdynamicsinteractionmodesallowedanalysesantinucleon-nucleonantiproton-proton
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The general properties of antiproton-proton annihilation at rest are presented, with special focus on the two-meson final states. The data exhibit remarkable dynamical selection rules : some allowed annihilation modes are suppressed by one order of magnitude with respect to modes of comparable phase-space. Various phenomenological analyses are reviewed, based on microscopic quark dynamics or symmetry considerations. The role of initial- and final-state interaction is also examined.
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