OZI rule and instantons

M. A. Nowak; J. J.M. Verbaarschot; I. Zahed

doi:10.1016/0370-2693(89)91215-X

OZI rule and instantons

Physics and Astronomy

Stony Brook University

Stony Brook University

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We investigate the effects of strangeness mixing in the QCD vacuum described as a quantum disordered phase of instantons and anti-instantons. We find that the constituent mass of the light quarks is a decreasing function of the current quark masses, and that its mass is almost insensitive to the value of the strange quark mass. Our results cannot account for a breach in the OZI rule in the vacuum. The relevance of this result for the amount of ss pairs in the nucleon and the pion-nucleon sigma term is discussed.

Original language	English
Pages (from-to)	382-386
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	226
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(89)91215-X
State	Published - Aug 10 1989

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10.1016/0370-2693(89)91215-X

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title = "OZI rule and instantons",

abstract = "We investigate the effects of strangeness mixing in the QCD vacuum described as a quantum disordered phase of instantons and anti-instantons. We find that the constituent mass of the light quarks is a decreasing function of the current quark masses, and that its mass is almost insensitive to the value of the strange quark mass. Our results cannot account for a breach in the OZI rule in the vacuum. The relevance of this result for the amount of ss pairs in the nucleon and the pion-nucleon sigma term is discussed.",

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AU - Zahed, I.

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N2 - We investigate the effects of strangeness mixing in the QCD vacuum described as a quantum disordered phase of instantons and anti-instantons. We find that the constituent mass of the light quarks is a decreasing function of the current quark masses, and that its mass is almost insensitive to the value of the strange quark mass. Our results cannot account for a breach in the OZI rule in the vacuum. The relevance of this result for the amount of ss pairs in the nucleon and the pion-nucleon sigma term is discussed.

AB - We investigate the effects of strangeness mixing in the QCD vacuum described as a quantum disordered phase of instantons and anti-instantons. We find that the constituent mass of the light quarks is a decreasing function of the current quark masses, and that its mass is almost insensitive to the value of the strange quark mass. Our results cannot account for a breach in the OZI rule in the vacuum. The relevance of this result for the amount of ss pairs in the nucleon and the pion-nucleon sigma term is discussed.

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U2 - 10.1016/0370-2693(89)91215-X

DO - 10.1016/0370-2693(89)91215-X

M3 - Article

SN - 0370-2693

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EP - 386

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -

OZI rule and instantons

Abstract

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