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Measurement of the branching fraction for psi(3770) -> gamma chi c0
Inst High Energy Phys, Beijing 100049, Peoples R China..
GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia..
Inst High Energy Phys, Beijing 100049, Peoples R China..
Carnegie Mellon Univ, Pittsburgh, PA 15213 USA..
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2016 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 753, 103-109 p.Article in journal (Refereed) PublishedText
Abstract [en]

By analyzing a data set of 2.92 fb(-1) of e(+) e(-) collision data taken at root s = 3.773 GeVand 106.41 x 10(6) psi(3686) decays taken at root s = 3.686 GeVwith the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for psi(3770)->gamma chi c0 to be B(psi(3770)->gamma chi c0) = (6.88 +/- 0.28 +/- 0.67) x 10(-3) and Gamma[psi(3770)->gamma chi c0] = (187 +/- 8 +/- 19) keV, respectively. These are the most precise measurements to date.

Place, publisher, year, edition, pages
2016. Vol. 753, 103-109 p.
National Category
Subatomic Physics
URN: urn:nbn:se:uu:diva-280248DOI: 10.1016/j.physletb.2015.11.074ISI: 000368783600015OAI: diva2:914209
Available from: 2016-03-23 Created: 2016-03-09 Last updated: 2016-03-23Bibliographically approved

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Johansson, TordKupsc, AndrzejLi, CuiPettersson, JoachimSchönning, KarinWolke, Magnus
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