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- Title
Possible Molecular Explanation for the Resonance Y(4500).
- Authors
Güngör, E.; Sundu, H.; Y. Süngü, J.; Veliev, E. V.
- Abstract
The BESIII collaboration has discovered a new state with hidden charm-strange. Its mass is intriguingly close to the D s (1968) D ¯ s 1 (2536) threshold and does not have the properties of the charmonium states. Working with the QCD sum rules (QCDSR) approach, we test if the charmonium-like structure Y(4500) , detected in the invariant mass spectrum K + K - J / ψ may be interpreted as an exotic D s (1968) D ¯ s 1 (2536) molecular structure with J PC = 1 - - . Considering the contributions of QCD condensates up to operator dimension ten, we estimate the mass and decay constant of Y(4500) resonance. We get m Y = (4488.35 ± 11.54) MeV in excellent agreement with the meson mass reported by BESIII and f Y = (4.04 ± 0.36) × 10 - 3 GeV 4 . Our findings indicate that a pseudoscalar-axialvector molecule current can well describe this state.
- Subjects
CHARMONIUM; DECAY constants; RESONANCE; MASS spectrometry; MOLECULAR structure; QUANTUM chromodynamics
- Publication
Few-Body Systems, 2023, Vol 64, Issue 3, p1
- ISSN
0177-7963
- Publication type
Article
- DOI
10.1007/s00601-023-01807-y