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- OZI_rule abstract "The OZI rule is a consequence of quantum chromodynamics (QCD), that explains why certain decay modes appear less frequently than otherwise might be expected. It was independently proposed by Susumu Okubo, George Zweig and Jugoro Iizuka in the 1960s.It states that any strongly occurring process will be suppressed if its Feynman diagram can be split in two by cutting only internal gluon lines.An example of such a suppressed decay is φ → π+ + π− + π0. It would be expected that this decay mode would dominate over other decay modes such as φ → K+ + K−, which have much lower Q values. In actuality, it is seen that φ decays to kaons 84% of the time, suggesting the decay path to pions is suppressed.An explanation of the OZI rule can be seen from the decrease of the coupling constant in QCD with increasing energy (or momentum transfer). For the OZI suppressed channels, the gluons must have high q2 (at least as much as the rest mass energies of the quarks into which they decay) and so the coupling constant will appear small to these gluons.A further example is given by the decays of excited states of charmonium (bound state of charm quark and antiquark).For states lighter than the charged D mesons, the decay must proceed just like the above example into three pions, with three virtual gluons mediating the interaction, each of which must have enough energy to produce a quark-antiquark pair. But above the D meson threshold, the original valence quarks need not annihilate; they can propagate into the final states. In this case, only two gluons are required, which share the energy of the light quark-antiquark pair that is spontaneously nucleated. They are thus lower in energy than the three gluons of the OZI-suppressed annihilation. The suppression arises from both the smaller values of the QCD coupling constant at high energies, as well as the greater number of interaction vertices.".
- OZI_rule wikiPageID "17606886".
- OZI_rule wikiPageLength "2799".
- OZI_rule wikiPageOutDegree "19".
- OZI_rule wikiPageRevisionID "602508701".
- OZI_rule wikiPageWikiLink Category:Quantum_chromodynamics.
- OZI_rule wikiPageWikiLink Charmonium.
- OZI_rule wikiPageWikiLink Coupling_constant.
- OZI_rule wikiPageWikiLink D_meson.
- OZI_rule wikiPageWikiLink Feynman_diagram.
- OZI_rule wikiPageWikiLink George_Zweig.
- OZI_rule wikiPageWikiLink Gluon.
- OZI_rule wikiPageWikiLink Invariant_mass.
- OZI_rule wikiPageWikiLink psi_meson.
- OZI_rule wikiPageWikiLink ψ_meson.
- OZI_rule wikiPageWikiLink Jugoro_Iizuka.
- OZI_rule wikiPageWikiLink Kaon.
- OZI_rule wikiPageWikiLink Momentum_transfer.
- OZI_rule wikiPageWikiLink Particle_decay.
- OZI_rule wikiPageWikiLink Phi_meson.
- OZI_rule wikiPageWikiLink Pion.
- OZI_rule wikiPageWikiLink Q_value_(nuclear_science).
- OZI_rule wikiPageWikiLink Quantum_chromodynamics.
- OZI_rule wikiPageWikiLink Quarkonium.
- OZI_rule wikiPageWikiLink Rest_mass.
- OZI_rule wikiPageWikiLink Strong_interaction.
- OZI_rule wikiPageWikiLink Susumu_Okubo.
- OZI_rule wikiPageWikiLinkText "OZI rule".
- OZI_rule hasPhotoCollection OZI_rule.
- OZI_rule wikiPageUsesTemplate Template:Particle-stub.
- OZI_rule subject Category:Quantum_chromodynamics.
- OZI_rule hypernym Consequence.
- OZI_rule type Disease.
- OZI_rule comment "The OZI rule is a consequence of quantum chromodynamics (QCD), that explains why certain decay modes appear less frequently than otherwise might be expected. It was independently proposed by Susumu Okubo, George Zweig and Jugoro Iizuka in the 1960s.It states that any strongly occurring process will be suppressed if its Feynman diagram can be split in two by cutting only internal gluon lines.An example of such a suppressed decay is φ → π+ + π− + π0.".
- OZI_rule label "OZI rule".
- OZI_rule sameAs OZI-Regel.
- OZI_rule sameAs Regola_di_OZI.
- OZI_rule sameAs Reguła_OZI.
- OZI_rule sameAs m.0466h1v.
- OZI_rule sameAs Q2008285.
- OZI_rule sameAs Q2008285.
- OZI_rule sameAs OZI规则.
- OZI_rule wasDerivedFrom OZI_rule?oldid=602508701.
- OZI_rule isPrimaryTopicOf OZI_rule.