Measurement of the absolute branching fraction of Ds0(2317)±→π0D±s

BESIII Collaboration, M. Ablikim, M.N. Achasov, S. Ahmed, A. Amoroso, Z Haddadi, N. Kalantar-Nayestanaki, M. Kavatsyuk, J.G Messchendorp, M. Tiemens

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    Abstract

    The process e+e→D*+sDs0(2317)+c.c. is observed for the first time with the data sample of 567  pb−1 collected with the BESIII detector operating at the BEPCII collider at a center-of-mass energy √s=4.6  GeV. The statistical significance of the Ds0(2317)± signal is 5.8σ and the mass is measured to be (2318.3±1.2±1.2)  MeV/c2. The absolute branching fraction B(Ds0(2317)±→π0D±s) is measured as 1.00+0.00−0.14(stat)+0.00−0.14(syst) for the first time. The uncertainties are statistical and systematic, respectively.
    Original languageEnglish
    Article number051103(R)
    Number of pages8
    JournalPhysical Review D
    Volume97
    DOIs
    Publication statusPublished - 26-Mar-2018

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