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- Title
Strong decays of charmonium-like state Y(4230).
- Authors
Ganbold, Gurjav; Ivanov, M. A.
- Abstract
Strong decays of the charmonium-like state Y(4320) have been studied in the framework of the covariant confined quark model. The resonance Y has been interpreted as a four-quark state with molecular-type interpolating current. We evaluate the hidden-charm decay width of Y into a vector and a scalar, with the latter decaying subsequently to a pair of charged pseudoscalar states. The strong decay mode Y → π + π - J / Ψ has been studied by involving the scalar resonances f 0 (500) and f 0 (980) , considered quark-antiquark states, while the mode Y → K + K - J / Ψ -via f 0 (980) . We have calculated the partial widths of the related strong decays and the branching ratio B (Y → K + K - J / Ψ) / B (Y → π + π - J / Ψ) , recently determined by the BESIII collaboration. The estimated branching ratio and calculated partial strong decay widths are in reasonable agreement with the latest experimental data.
- Subjects
CHARMONIUM; BRANCHING ratios; QUARK models; RESONANCE
- Publication
European Physical Journal A -- Hadrons & Nuclei, 2024, Vol 60, Issue 1, p1
- ISSN
1434-6001
- Publication type
Article
- DOI
10.1140/epja/s10050-024-01234-5