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- W2999156773 abstract "The spectrum of hadrons is important for understanding the confinement of quantum chromodynamics. Many new puzzles arose since 2003 due to the abundance of experimental discoveries with the $XYZ$ structures in the heavy quarkonium mass region being the outstanding examples. Hadronic resonances correspond to poles of the $S$-matrix, which has other types of singularities such as the triangle singularity due to the simultaneous on-shellness of three intermediate particles. Here we briefly discuss a few possible manifestations of triangle singularities in the $XYZ$ physics, paying particular attention to the formalism that can be used to analyze the data for charged $Z_c$ structures in the $psipi$ distributions of the reaction $e^+e^-to psipi^+pi^-$." @default.
- W2999156773 created "2020-01-23" @default.
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- W2999156773 date "2020-01-16" @default.
- W2999156773 modified "2023-09-27" @default.
- W2999156773 title "Triangle Singularities and Charmonium-like $XYZ$ States" @default.
- W2999156773 hasPublicationYear "2020" @default.
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