Observation of eta(c) decay into Sigma(+)(Sigma)over-bar(-) and (sic)(-)over bar>(+) final states

M. Ablikim*, M. N. Achasov, O. Albayrak, D. J. Ambrose, F. F. An, Q. An, J. Z. Bai, Y. Ban, J. Becker, J. V. Bennett, M. Bertani, J. M. Bian, E. Boger, O. Bondarenko, I. Boyko, R. A. Briere, V. Bytev, X. Cai, O. Cakir, A. CalcaterraG. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J.C. Chen, M.L. Chen, S. J. Chen, X. Chen, Y.B. Chen, H. P. Cheng, Y. P. Chu, F. Coccetti, D. Cronin-Hennessy, H. L. Dai, J.P. Dai, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, W. M. Ding, Y. Ding, L. Y. Dong, N. Kalantar-Nayestanaki, M. Kavatsyuk, Cheng Liu, H. Loehner, J. G. Messchendorp, BESIII Collaboration

*Corresponding author voor dit werk

    Onderzoeksoutput: ArticleAcademicpeer review

    5 Citaten (Scopus)

    Samenvatting

    Using a data sample of 2.25 x 10(8) J/psi events collected with the BESIII detector, we present the first observation of the decays of eta(c) mesons to Sigma(+)(Sigma) over bar (-) and (sic)(-)(+) .The branching fractions are measured to be (2.11 +/- 0.28(stat) +/- 0.18(syst) +/- 0.50(PDG)) x 10(-3) and (0.89 +/- 0.16(stat) +/- 0.08(syst) +/- 0.21(PDG)) x 10(-3) for eta(c) -> Sigma(+)(Sigma) over bar (-) and (sic)(-)(+) , respectively. These branching fractions provide important information on the helicity selection rule in charmonium- decay processes. DOI: 10.1103/PhysRevD.87.012003

    Originele taal-2English
    Artikelnummer012003
    Aantal pagina's9
    TijdschriftPhysical Review D
    Volume87
    Nummer van het tijdschrift1
    DOI's
    StatusPublished - 3-jan.-2013

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