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Observation of a narrow mass state decaying into Y(1S)+gamma in p(p)over-bar collisions at root s=1.96 TeV
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2012 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 86, no 3, 031103- p.Article in journal (Refereed) Published
Abstract [en]

Using data corresponding to an integrated luminosity of 1.3 fb(-1), we observe a narrow mass state decaying into Gamma(1S) + gamma, where the Gamma(1S) meson is detected by its decay into a pair of oppositely charged muons, and the photon is identified through its conversion into an electron-positron pair. The significance of this observation is 5.6 standard deviations. The mass of the state is centered at 10.551 +/- 0.014(stat) +/- 0.017(syst) GeV/c(2), which is consistent with that of the state recently observed by the ATLAS Collaboration.

Place, publisher, year, edition, pages
2012. Vol. 86, no 3, 031103- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-181405DOI: 10.1103/PhysRevD.86.031103ISI: 000307506200002OAI: oai:DiVA.org:uu-181405DiVA: diva2:557659
Available from: 2012-09-28 Created: 2012-09-24 Last updated: 2017-12-07Bibliographically approved

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Buszello, Claus P.

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