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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2009, Volume 90, Issue 6, Pages 451–455 (Mi jetpl537)  

This article is cited in 5 scientific papers (total in 5 papers)

FIELDS, PARTICLES, AND NUCLEI

Baryon resonances in the mean field approach and a simple explanation of the $\Theta^+$ pentaquark

D. I. Diakonov

Petersburg Nuclear Physics Institute RAS
Full-text PDF (747 kB) Citations (5)
References:
Abstract: We suggest to classify baryon resonances as single-quark states in a mean field, and/or as its collective excitations. Identifying the Roper resonance $N(1440,{\textstyle{\frac12}}^+)$, the nucleon resonance $N(1535,{\textstyle{\frac12}}^-)$, and the singlet hyperon $\Lambda(1405,{\textstyle{\frac12}}^-)$ as single-quark excitations, we find that there must be an exotic $S=+1$ baryon resonance $\Theta^+\,$ (the “pentaquark”) with a mass about $1440+1535-1405=1570$ MeV and spin-parity ${\textstyle{\frac12}}^+$. We argue that $\Theta^+\,$ is an analog of the Gamov–Teller excitation long known in nuclear physics.
Received: 10.08.2009
English version:
Journal of Experimental and Theoretical Physics Letters, 2009, Volume 90, Issue 6, Pages 407–411
DOI: https://doi.org/10.1134/S0021364009180015
Bibliographic databases:
Document Type: Article
PACS: 12.39.Ki, 14.20.Dh, 14.20.Jn
Language: English
Citation: D. I. Diakonov, “Baryon resonances in the mean field approach and a simple explanation of the $\Theta^+$ pentaquark”, Pis'ma v Zh. Èksper. Teoret. Fiz., 90:6 (2009), 451–455; JETP Letters, 90:6 (2009), 407–411
Citation in format AMSBIB
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\by D.~I.~Diakonov
\paper Baryon resonances in the mean field approach and a simple explanation of the $\Theta^+$ pentaquark
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2009
\vol 90
\issue 6
\pages 451--455
\mathnet{http://mi.mathnet.ru/jetpl537}
\transl
\jour JETP Letters
\yr 2009
\vol 90
\issue 6
\pages 407--411
\crossref{https://doi.org/10.1134/S0021364009180015}
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\scopus{https://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-76349106876}
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  • https://www.mathnet.ru/eng/jetpl/v90/i6/p451
  • This publication is cited in the following 5 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
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