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RECENT CHARMONIUM RESULTS AT BES-III
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Recent results on Charmonium spectrum and decays at Beijing Spectrometers III (BES-III) experiment will be presented. This report includes the following topics: 1, first measurement of the transition rates of ψ′ → π0hcand hc→ γηc, and improved measurement of the mass and width of the hc; 2, observations of χcJ→ VV, with VV being ɸɸ, ωω and ωɸ, χcJ→ ωɸ as well as χc1→ ɸɸ and ωω are first observations; 3, improved measurement of the branching fractions of χcJdecay into neutral pseudo-scalar pairs, including χc0,2→ π0π0and χc0,2→ηη. All these measurements are based on the world largest ψ′ data sample collected with the BES-III detector at the Beijing Electron Positron Collider II (BEPC-II).
Title: RECENT CHARMONIUM RESULTS AT BES-III
Description:
Recent results on Charmonium spectrum and decays at Beijing Spectrometers III (BES-III) experiment will be presented.
This report includes the following topics: 1, first measurement of the transition rates of ψ′ → π0hcand hc→ γηc, and improved measurement of the mass and width of the hc; 2, observations of χcJ→ VV, with VV being ɸɸ, ωω and ωɸ, χcJ→ ωɸ as well as χc1→ ɸɸ and ωω are first observations; 3, improved measurement of the branching fractions of χcJdecay into neutral pseudo-scalar pairs, including χc0,2→ π0π0and χc0,2→ηη.
All these measurements are based on the world largest ψ′ data sample collected with the BES-III detector at the Beijing Electron Positron Collider II (BEPC-II).
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