On the origin of the OZI rule in QCD

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The OZI rule is prominent in hadronic phenomena only because OZI violation is typically an order of magnitude smaller than expected from large N{sub c} arguments. With its standard {sup 3}P{sup 0} pair creation operator for hadronic decays by flux tube breaking, the quark model respects the OZI rule at tree level and exhibits the cancellations between OZI-violating meson loop diagrams required for this dramatic suppression. However, if the quark model explanation for these cancellations is correct, then OZI violation would be expected to be large in the nonet with the same quantum numbers as the pair creation operator: the ... continued below

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Isgur, Nathan & Thacker, H.B. May 1, 2000.

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The OZI rule is prominent in hadronic phenomena only because OZI violation is typically an order of magnitude smaller than expected from large N{sub c} arguments. With its standard {sup 3}P{sup 0} pair creation operator for hadronic decays by flux tube breaking, the quark model respects the OZI rule at tree level and exhibits the cancellations between OZI-violating meson loop diagrams required for this dramatic suppression. However, if the quark model explanation for these cancellations is correct, then OZI violation would be expected to be large in the nonet with the same quantum numbers as the pair creation operator: the O{sup ++} mesons. Experiment is currently unable to identify these mesons, but the authors report here on a lattice QCD calculation which confirms that the OZI rule arises from QCD in the vector and axial vector mesons as observed, and finds a large violation of the rule in the scalar mesons as anticipated by the quark model. In view of this result, they make some remarks on possible connections between the {sup 3}P{sub 0} pair creation model, scalar mesons, and the U{sub A}(1) anomaly responsible for the large OZI violation which drives the {eta}{prime} mass. In particular, they note that their result favors the large N{sub c} and not the instanton interpretation of the solution to the {eta}{prime} mass problem.

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1857 Kilobytes pages

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  • Other Information: PBD: 1 May 2000

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  • Report No.: DOE/ER/40150-1454
  • Report No.: JLAB-THY-00-10
  • Report No.: hep-lat/0005006
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 755564
  • Archival Resource Key: ark:/67531/metadc709361

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • May 1, 2000

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  • Sept. 12, 2015, 6:31 a.m.

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  • Feb. 5, 2016, 8:23 p.m.

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Isgur, Nathan & Thacker, H.B. On the origin of the OZI rule in QCD, article, May 1, 2000; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc709361/: accessed April 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.