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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2004, Volume 80, Issue 6, Pages 439–441 (Mi jetpl2118)  

This article is cited in 27 scientific papers (total in 27 papers)

FIELDS, PARTICLES, AND NUCLEI

Pentaquark decay is suppressed by chirality conservation

B. L. Ioffe, A. G. Oganesian

Institute for Theoretical and Experimental Physics, 117218 Moscow, Russia
References:
Abstract: It is shown, that if the pentaquark $\Theta^+ = uudd\bar{s}$ baryon can be represented by the local quark current $\eta_{\Theta}$, its decay $\Theta^+ \to n K^+ (p K^0)$ is forbidden in the limit of chirality conservation. The $\Theta^+$decay width $\Gamma$ is proportional to $\alpha^2_s \langle 0 \vert \bar{q} q \vert 0 \rangle^2$, where $\langle 0 \vert \bar{q} q \vert 0 \rangle$, $q = u,d,s$ is quark condensate, and, therefore, is strongly suppressed. The polarization operator of the pentaquark current is calculated using the operator product expansion. The $\Theta^+$ mass found by the QCD sum rules method is in a reasonable agreement with experiment.
Received: 19.08.2004
English version:
Journal of Experimental and Theoretical Physics Letters, 2004, Volume 80, Issue 6, Pages 386–388
DOI: https://doi.org/10.1134/1.1830653
Bibliographic databases:
Document Type: Article
PACS: 12.38.-t, 12.39.-x
Language: English
Citation: B. L. Ioffe, A. G. Oganesian, “Pentaquark decay is suppressed by chirality conservation”, Pis'ma v Zh. Èksper. Teoret. Fiz., 80:6 (2004), 439–441; JETP Letters, 80:6 (2004), 386–388
Citation in format AMSBIB
\Bibitem{IofOga04}
\by B.~L.~Ioffe, A.~G.~Oganesian
\paper Pentaquark decay is suppressed by chirality conservation
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2004
\vol 80
\issue 6
\pages 439--441
\mathnet{http://mi.mathnet.ru/jetpl2118}
\adsnasa{https://adsabs.harvard.edu/cgi-bin/bib_query?2004JETPL..80..386I}
\transl
\jour JETP Letters
\yr 2004
\vol 80
\issue 6
\pages 386--388
\crossref{https://doi.org/10.1134/1.1830653}
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  • https://www.mathnet.ru/eng/jetpl2118
  • https://www.mathnet.ru/eng/jetpl/v80/i6/p439
  • This publication is cited in the following 27 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Письма в Журнал экспериментальной и теоретической физики Pis'ma v Zhurnal Иksperimental'noi i Teoreticheskoi Fiziki
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