BESIII reports the first observation of the exotic π₁(1600) state in χ_c1 decays from ψ(2S) with >21σ significance, measuring mass 1828 MeV/c², width 638 MeV, and product branching fraction 4.30×10^{-4}.
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2 Pith papers cite this work. Polarity classification is still indexing.
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Ω(2012) is interpreted as a Ξ(1530)K molecular state with mass 2.00 ± 0.15 GeV and total decay width 0.96 MeV.
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Observation of the Exotic State $\pi_{1}(1600)$ in $\psi(2S)\rightarrow\gamma\chi_{c1},\chi_{c1}\rightarrow\pi^{+}\pi^{-}\eta'$
BESIII reports the first observation of the exotic π₁(1600) state in χ_c1 decays from ψ(2S) with >21σ significance, measuring mass 1828 MeV/c², width 638 MeV, and product branching fraction 4.30×10^{-4}.
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Interpretation of $\Omega(2012)$ as a $\Xi(1530)K$ molecular state
Ω(2012) is interpreted as a Ξ(1530)K molecular state with mass 2.00 ± 0.15 GeV and total decay width 0.96 MeV.