Proton strangeness induced by instantons

Klabučar, Dubravko; Kumerički, Krešimir; Melić, Blaženka; Picek, Ivica (1999) Proton strangeness induced by instantons. Czechoslovak Journal of Physics, 50 (Suppl.). pp. 187-193. ISSN 0011-4626

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Abstract

We report on a calculation of the dilute instanton liquid contribution to the strangeness in the proton. Specifically, we express the proton matrix elements of strange-quark operators in terms of a model valence nucleon state and the strangeness producing interactions. This enables us to evaluate the strangeness in different Lorentz channels in the same way. We find that in the context of the MIT bag model only the scalar strangeness is induced by the random instanton liquid. We discuss these results in the light of the recent experiments.

Item Type:	Article
Uncontrolled Keywords:	proton; strangeness; instantons; bag model
Subjects:	NATURAL SCIENCES > Physics
Divisions:	Theoretical Physics Division
Projects:	Project title Project leader Project code Project type Teorijska istraživanja osobina fundamentalnih čestica Branko Guberina 00980102 MZOS Struktura elementarnih čestica i kvantna teorija polja Dubravko Tadić 119222 MZOS
Depositing User:	Blaženka Melić
Date Deposited:	09 Feb 2016 13:34
URI:	http://fulir.irb.hr/id/eprint/2457
DOI:	10.1007/s10582-000-0024-y

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