By analyzing a data set of 2.92 fb-1 of e+e- collision data taken at √s = 3.773 GeV and 106.41 × 106 ψ(3686) decays taken at √s = 3.686 GeV with the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for ψ (3770) → γχc0 to be B(ψ(3770)→γχc0)=(6.88±0.28±0.67)×10-3 and Γ[ψ(3770)→γχc0]=(187±8±19) keV, respectively. These are the most precise measurements to date.

Measurement of the branching fraction for ψ(3770) → γ χc0

Pacetti S.;
2016

Abstract

By analyzing a data set of 2.92 fb-1 of e+e- collision data taken at √s = 3.773 GeV and 106.41 × 106 ψ(3686) decays taken at √s = 3.686 GeV with the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for ψ (3770) → γχc0 to be B(ψ(3770)→γχc0)=(6.88±0.28±0.67)×10-3 and Γ[ψ(3770)→γχc0]=(187±8±19) keV, respectively. These are the most precise measurements to date.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11391/1462609
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