Using a sample of 106 million ψ(3686) decays, the branching fractions of ψ(3686) → γχc0, ψ(3686) → γχc1, and ψ(3686) → γχc2 are measured with improved precision to be (9.389 pm 0.014 pm 0.332)%, (9.905 pm 0.011 pm 0.353)%, and (9.621 pm 0.013 pm 0.272)%, respectively, where the first uncertainties are statistical and the second ones are systematic. The product branching fractions of ψ(3686) → γχc1; χc1 → γJ/ψ and ψ(3686) → γχc2; χc2 → γJ/ψ and the branching fractions of χc1 → γJ/ψ and χc2 → γJ/ψ are also presented
Branching fraction measurements of ψ(3686)→γχcJ
FARINELLI, Riccardo;GARZIA, Isabella;MEZZADRI, Giulio;
2017
Abstract
Using a sample of 106 million ψ(3686) decays, the branching fractions of ψ(3686) → γχc0, ψ(3686) → γχc1, and ψ(3686) → γχc2 are measured with improved precision to be (9.389 pm 0.014 pm 0.332)%, (9.905 pm 0.011 pm 0.353)%, and (9.621 pm 0.013 pm 0.272)%, respectively, where the first uncertainties are statistical and the second ones are systematic. The product branching fractions of ψ(3686) → γχc1; χc1 → γJ/ψ and ψ(3686) → γχc2; χc2 → γJ/ψ and the branching fractions of χc1 → γJ/ψ and χc2 → γJ/ψ are also presentedFile in questo prodotto:
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