Observation of the charged hadron Zc±(3900) and evidence for the neutral Zc0(3900) in e+e−→ππJ/ψ at s=4170MeV
By T. Xiao, S. Dobbs, A. Tomaradze, K. Seth. 2013
294 citations recorded by the source corpus.
Abstract Using 586 pb − 1 of e + e − annihilation data taken with the CLEO-c detector at s = 4170 MeV , the peak of the charmonium resonance ψ ( 4160 ) , we analyze the decay ψ ( 4160 ) → π + π − J / ψ , and report observation of the charged state Z c ± ( 3900 ) decaying into π ± J / ψ at a significance level of > 5 σ . We obtain M ( Z c ± ) = 3886 ± 4 ( stat ) ± 2 ( syst ) MeV and Γ ( Z c ± ) = 37 ± 4 ( stat ) ± 8 ( syst ) MeV , which are in good agreement with the results for this resonance obtained by the BES III and Belle Collaborations in the decay of the resonance Y(4260). We also present first evidence for the production of the neutral member of this isospin triplet, Z c 0 ( 3900 ) decaying into π 0 J / ψ at a 3.5σ significance level.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/14ab9606b5f3d058d8a4361b0d308338f26d5c14
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In Nuclear and High Energy Physics
Citations in the corpus
- Hadronic molecules (2017, background): “…for a given heavy meson pair can be worked out by changing the basis by means of a unitary transformation (see, e.g., (Ohkoda et al., 2012a; Xiao et al., 2013a)): |s1 c, j1 `, j1; s2 c, j2 `, j2; J〉 = ∑ scc̄,j` √ (2j1 + 1)(2j2 + 1)(2scc̄ + 1)(2j` + 1) × s1 c s2 c scc̄ j1 ` j2 ` j` j1 j2 J…”
- Multiquark States (2017, unknown): “The Zc(3900) is seen in the ππJ/ψ final state as a peak in M(πJ/ψ) [114, 115, 116, 117] and in the πDD̄∗ final state as a peak in M(DD̄∗ [118, 119], as illustrated in Fig.”
- Multiquark Resonances (2016, methodology): “An analysis of CLEO-c data by the NU group [258] confirmed the Zc(3900) in the decay of the ψ(4160), and found a hint of a neutral Zc(3900) decaying to J/ψ π0.”
- Exotic Hadrons from Heavy Ion Collisions (2017, methodology): “The state was confirmed in the same decay mode by Belle [154] and by the analysis of CLEO-c data [155].”