Comments on 12% rule.

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Presentation transcript:

Comments on 12% rule

Conditions 1. OZI rule three-gluon exchangelight hadrons 2. Perturbative QCDexclusive processes large momentum transfer factorization theorem 3. Valence quark dominance helicity conservation rule: pQCD,gluon,light quark

Valence quark dominance Collinear quarks

12% rule violation OZI rule violation Momentum transfer is not large enough pQCDlight hadrons:factorization? Valence quark dominance?  Non-perturbative mixing Higher Fock states  should explain all of decay chanel