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Evidence for e(+)e(-)->gamma chi c1,2 at center-of-mass energies from 4.009 to 4.360 GeV
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2015 (English)In: Chinese Physics C, High Energy Physics & Nuclear Physics, ISSN 1674-1137, E-ISSN 0899-9996, Vol. 39, no 4, 041001Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2015. Vol. 39, no 4, 041001
Keyword [en]
heavy quarkonia, decays of hadronic, electron-positron collisions, hadron production by
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Physical Sciences
URN: urn:nbn:se:uu:diva-252695DOI: 10.1088/1674-1137/39/4/041001ISI: 000352828800001OAI: oai:DiVA.org:uu-252695DiVA: diva2:813350
Available from: 2015-05-22 Created: 2015-05-11 Last updated: 2015-05-22Bibliographically approved

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Johansson, TordKupsc, AndrzejSchönning, KarinWolke, Magnus
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