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Pentaquarks and strange tetraquark mesons

Theoretical Physics Division, National Research Centre “Kurchatov Institute”, Petersburg Nuclear Physics Institute, Gatchina 188300, Russia

E-mail Address: anisovic@thd.pnpi.spb.ru

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M. A. Matveev

Theoretical Physics Division, National Research Centre “Kurchatov Institute”, Petersburg Nuclear Physics Institute, Gatchina 188300, Russia

E-mail Address: matveev@thd.pnpi.spb.ru

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A. V. Sarantsev

Theoretical Physics Division, National Research Centre “Kurchatov Institute”, Petersburg Nuclear Physics Institute, Gatchina 188300, Russia

Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, Bonn 53115, Germany

E-mail Address: andsar@iskp.uni-bonn.de

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A. N. Semenova

Theoretical Physics Division, National Research Centre “Kurchatov Institute”, Petersburg Nuclear Physics Institute, Gatchina 188300, Russia

E-mail Address: ala.semenova@gmail.com

Corresponding author

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https://doi.org/10.1142/S0217732315502120Cited by:10 (Source: Crossref)

Abstract

We consider the interplay of the pentaquark states and strange tetraquark states in the decay $Λ_{b}^{0} \to K^{-} J / ψ p$ $Λ_{b}^{0} \to K^{-} J / ψ p$ . Possible existence of ( $c s \bar{c} ū$ )-states is taken up and their manifestation in the $K^{-} J / ψ$ -channel is discussed. It is emphasized that these exotic mesons can imitate broad bumps in the $p J / ψ$ -channel.

Keywords:

PACS: 12.40.Yx, 12.39.-x, 14.40.Lb

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