2014
DOI: 10.1103/physrevd.89.074030
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Measurement ofχcJdecaying intoηK+K

Abstract: Using (106.41 ± 0.86) × 10 6 ψ(3686) events collected with the BESIII detector at BEPCII, we study for the first time the decay χcJ → η ′ K + K − (J = 1, 2), where η ′ → γρ 0 and η ′ → ηπ + π − . 3A partial wave analysis in the covariant tensor amplitude formalism is performed for the decayare observed with statistical significances larger than 5σ, and their branching fractions are measured.

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Cited by 8 publications
(1 citation statement)
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“…The BESIII result is shown in Figure 10. A well-known theoretical expression relates the branching ratio to the decay constant, and BESIII obtains f D + = (203.2 ± 5.3 ± 1.8) MeV (109). This is the most precise determination to date, and it compares well to LQCD calculations (108).…”
Section: Precision Semileptonic and Leptonic D Decaysmentioning
confidence: 60%
“…The BESIII result is shown in Figure 10. A well-known theoretical expression relates the branching ratio to the decay constant, and BESIII obtains f D + = (203.2 ± 5.3 ± 1.8) MeV (109). This is the most precise determination to date, and it compares well to LQCD calculations (108).…”
Section: Precision Semileptonic and Leptonic D Decaysmentioning
confidence: 60%