Regular Article -Theoretical Physics
New narrow LHCb pentaquarks as lowest antiquark-diquark-diquark systems
Petersburg Nuclear Physics Institute of National Research Centre “Kurchatov Institute”, Gatchina, 188300, Russia
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Accepted: 24 April 2020
Published online: 19 May 2020
The antiquark-diquark-diquark model describes pentaquark states both in terms of quarks and hadrons. We discuss pentaquark states with hidden charm discovered in the spectrum by the LHCb collaboration. We consider three pentaquark states as members of the lowest (S-wave) multiplet and discuss the mass splitting scheme. The latest LHCb data for pentaquarks with hidden charm provide an opportunity to make an assumption about the diquark content of the pentaquark states. We give a classification for the LHCb pentaquarks and define recombination channels for these states.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2020