Evidence for e(+)e(-)->gamma chi c1,2 at center-of-mass energies from 4.009 to 4.360 GeV

M. Ablikim*, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, O. Bondarenko, Z. Haddadi, N. Kalantar-Nayestanaki, M. Kavatsyuk, H. Loehner, J. G. Messchendorp, M. Tiemens, BESIII Collaboration

*Corresponding author voor dit werk

    OnderzoeksoutputAcademicpeer review

    13 Citaten (Scopus)
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    Samenvatting

    Using data samples collected at center-of-mass energies of root s=4.009, 4.230, 4.260, and 4.360 GeV with the BESIII detector operating at the BEPCII collider, we perform a search for the process e(+)e(-)->gamma chi(cJ) (J=0, 1, 2) and find evidence for e(+)e(-)->gamma chi(c1) and e(+)e(-)->gamma chi(c2) with statistical significances of 3.0 sigma and 3.4 sigma, respectively. The Born cross sections sigma(B)(e(+)e(-)->gamma chi(cJ)), as well as their upper limits at the 90% confidence level (C.L.) are determined at each center-of-mass energy.

    Originele taal-2English
    Artikelnummer041001
    Aantal pagina's9
    TijdschriftChinese Physics C
    Volume39
    Nummer van het tijdschrift4
    DOI's
    StatusPublished - apr.-2015

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