Analysis of the mass and width of the X(4140) as axialvector tetraquark state

2018/11/30 by Zhi-Gang Wang, Zun-Yan Di · 2 citations
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1140/epjc/s10052-019-6596-8

published as Eur. Phys. J. C 79 (2019) 72 · 17 pages, 5 figures

arxiv created 2018/12/30 · arxiv updated 2019/01/30

Abstract

In this article, we construct both the [sc]_T[sc]_A+[sc]_A[sc]_T type and [sc]_T[sc]_V-[sc]_V[sc]_T type axialvector currents with J^PC=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[sc]_V-[sc]_V[sc]_T type axialvector tetraquark state. Then we study the hadronic coupling constant g_XJ/ψϕ with the QCD sum rules based on solid quark-hadron duality, and obtain the decay width Γ(X(4140)→ J/ψϕ)=86.9±22.6 \rmMeV, which is in excellent agreement with the experimental data 83± 21⁺²¹_-14 MeV from the LHCb collaboration.

Cited by

• Strong decays of the Y(4660) as a vector tetraquark state in solid quark-hadron duality
• Revisit the X(4274) as the axialvector tetraquark state