Title
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Measurement of in collisions at =1.96 TeV
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Author
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Institution/Organisation
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CDF Collaboration
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Abstract
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We measure the ratio of cross section times branching fraction, Rp=σχc2B(χc2→J/ψγ)/σχc1B(χc1→J/ψγ), in 1.1 fb-1 of pp̅ collisions at √s=1.96 TeV. This measurement covers the kinematic range pT(J/ψ)>4.0 GeV/c, |η(J/ψ)<1.0, and pT(γ)>1.0 GeV/c. For events due to prompt processes, we find Rp=0.395±0.016(stat)±0.015(syst). This result represents a significant improvement in precision over previous measurements of prompt χc1,2 hadro production. |
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Language
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English
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Source (journal)
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Physical review letters. - New York, N.Y., 1958, currens
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Publication
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New York, N.Y.
:
American Physical Society
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2007
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ISSN
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0031-9007
[print]
1079-7114
[online]
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Volume/pages
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98
:23
(2007)
, p. 232001,1-232001,7
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ISI
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000247107200012
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Full text (Publisher's DOI)
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Full text (open access)
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