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51997 |
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|a Xie, Si
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|a Massachusetts Institute of Technology. Department of Physics
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|a Massachusetts Institute of Technology. Laboratory for Nuclear Science
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|a Paus, Christoph M. E.
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|a Xie, Si
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|a Makhoul, K.
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|a Knuteson, Bruce O.
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|a Henderson, C.
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|a Hahn, Kristian Allan
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|a Goncharov, M.
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|a Gomez-Ceballos, Guillelmo
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|a Choudalakis, Georgios
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|a Bauer, Gerry P.
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|a Paus, Christoph M. E.
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|a Makhoul, K.
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|a Knuteson, Bruce O.
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|a Henderson, C.
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|a Hahn, Kristian Allan
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|a Goncharov, M.
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|a Gomez-Ceballos, Guillelmo
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|a Choudalakis, Georgios
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|a Bauer, Gerry P.
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|a Paus, Christoph M. E.
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|a Observation of Exclusive Charmonium Production and gamma gamma -->mu+mu- in pp-bar Collisions at sqrt[s]=1.96 TeV
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|a Observation of Exclusive Charmonium Production and γγ→μ[superscript +]μ[superscript]- in pp̅ Collisions at √s=1.96 TeV
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|b American Physical Society,
|c 2010-03-03T14:41:53Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/51997
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|a In CDF we have observed the reactions p+p̅ →p+X+p̅ , with X being a centrally produced J/ψ, ψ(2S), or χ[subscript c0], and γγ→μ[superscript +]μ[superscript -] in pp̅ collisions at √s=1.96 TeV. The event signature requires two oppositely charged central muons, and either no other particles or one additional photon detected. Exclusive vector meson production is as expected for elastic photoproduction, γ+p→J/ψ(ψ(2S))+p, observed here for the first time in hadron-hadron collisions. We also observe exclusive χ[subscript c0]→J/ψ+γ. The cross sections dσ/dy|[subscript y=0] for J/ψ, ψ(2S), and χ[subscript c0] are 3.92±0.25(stat)±0.52(syst) nb, 0.53±0.09(stat)±0.10(syst) nb, and 76±10(stat)±10(syst) nb, respectively, and the continuum is consistent with QED. We put an upper limit on the cross section for Odderon exchange in exclusive J/ψ production.
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|a Academy of Finland
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|a Slovak R&D Agency
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|a Programa Consolider-Ingenio 2010, Spain
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|a Ministerio de Ciencia e Innovación, Spain
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|a Russian Foundation for Basic Research
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|a Institut National de Physique Nucleaire et Physique des Particules/CNRS
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|a Royal Society, United Kingdom
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|a Science and Technology Facilities Council, United Kingdom
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|a Korean Research Foundation
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|a Korean Science and Engineering Foundation
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|a Bundesministerium für Bildung und Forschung, Germany
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|a Alfred P. Sloan Foundation
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|a Swiss National Science Foundation
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|a National Science Council of the Republic of China
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|a Natural Sciences and Engineering Research Council of Canada
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|a Ministry of Education, Culture, Sports, Science and Technology of Japan
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|a Italian Istituto Nazionale di Fisica Nucleare
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|a National Science Foundation
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|a United States Department of Energy
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|a en_US
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|a Article
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|t Physical Review Letters
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