Possible tetraquark states in the π + χ c1 invariant-mass distribution

2008/07/31 by Zhi-Gang Wang · 19 citations
Mathematics · Physics and Astronomy · #High-Energy Particle Collisions Research #Invariant (physics) #Invariant mass #Mathematical physics #Mathematics #Meson #Parity (physics) #Particle physics #Particle physics theoretical and experimental studies #Physics #QCD sum rules #Quantum Chromodynamics and Particle Interactions #Scalar (mathematics) #Tetraquark #hep-ph

paper · pdf · doi:10.1140/epjc/s10052-008-0812-2

published in The European Physical Journal C 59(3), 675-681 (Springer Science+Business Media) · 12 pages, 4 figures

arxiv created 2008/11/04 · openalex publication_date 2008/11/27 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

In this article, we assume that there exist hidden charmed tetraquark states with the spin-parity J^P=1^-, and calculate their masses with the QCD sum rules. The numerical result indicates that the masses of the vector hidden charmed tetraquark states are about M_Z=(5.12±0.15) \rmGeV or M_Z=(5.16±0.16) \rmGeV, which are inconsistent with the experimental data on the π⁺ χ_c1 invariant mass distribution. The hidden charmed mesons Z₁, Z₂ or Z may be scalar hidden charmed tetraquark states, hadro-charmonium resonances or molecular states.

Citations

• Review of Particle Physics
• Possible nature of Z⁺(4430)
• Observation and Properties of theX(3872)Decaying toJ/ψπ+π−inpp¯Collisions ats=1.96 TeV
• Understanding the Charged Meson Z(4430)
• Z+(4430)as aD1′D*(D1D*) molecular state
• Observation of a Resonancelike Structure in theπ+−ψ′Mass Distribution in ExclusiveB→Kπ+−ψ′Decays
• Analysis of X (1576) as a Tetraquark State with the QCD Sum Rules
• IsZ+(4430)a loosely bound molecular state?
• Partners ofZ(4430)and productions inBdecays
• Evidence that the Y(4660) is an f0(980)ψ′ bound state
• The new heavy mesons: A status report
• The possible interpretations of Y(4260)
• The Exotic XYZ Charmonium-Like Mesons
• Is D s (2700) a charmed tetraquark state?
• Study of theB−→J/ψK−π+π−decay and measurement of theB−→X(3872)K−branching fraction
• Observation of a New Narrow Charmonium State in Exclusive B+-->K+ pi+pi- J/psi Decays
• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)

Cited by

• Analysis of the Zc(4200) as axial-vector molecule-like state
• Mass spectrum of the vector-hidden charm and bottom tetraquark states