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- Title
Analysis of the mass and width of the X(4140) as axialvector tetraquark state.
- Authors
Wang, Zhi-Gang; Di, Zun-Yan
- Abstract
In this article, we construct both the [sc]T[s¯c¯]A+[sc]A[s¯c¯]T type and [sc]T[s¯c¯]V-[sc]V[s¯c¯]T type axialvector currents with JPC=1++ to study the mass of the X(4140) with the QCD sum rules. The predicted masses support assigning the X(4140) to be the [sc]T[s¯c¯]V-[sc]V[s¯c¯]T type axialvector tetraquark state. Then we study the hadronic coupling constant gXJ/ψϕ with the QCD sum rules based on solid quark-hadron duality, and obtain the decay width Γ(X(4140)→J/ψϕ)=86.9±22.6MeV, which is in excellent agreement with the experimental data 83±21-14+21MeV from the LHCb collaboration.
- Subjects
SPIN-spin interactions; COUPLING constants; PARTICLES (Nuclear physics); VALENCE quark; EXOTIC mesons
- Publication
European Physical Journal C -- Particles & Fields, 2019, Vol 79, Issue 1, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-019-6596-8