Observation of associated production of a Z boson with a D meson in the forward region
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Aaij2014_Article_ObservationOfAssociatedProduct.pdf
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Published version
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684.95 KB
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Author(s) • •
The LHCb Collaboration
Ilten, Philip J
Williams, Michael
Date Issued
2014
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
Aaij, R., et al. "Observation of Associated Production of a Z Boson with a D Meson in the Forward Region." 4 (2014): 091 (12 pp.).
Version
Final published version
Abstract
© CERN, for the benefit of the LHCb Collaboration. A search for associated production of a Z boson with an open charm meson is presented using a data sample, corresponding to an integrated luminosity of 1.0 fb−1 of proton-proton collisions at a centre-of-mass energy of 7TeV, collected by the LHCb experiment. Seven candidate events for associated production of a Z boson with a D0 meson and four candidate events for a Z boson with a D+ meson are observed with a combined significance of 5.1 standard deviations. The production cross-sections in the forward region are measured to be σZ → μ+μ−,D0 = 2.50 ± 1.12 ± 0.22 pb, σZ → μ+μ−,D+ = 0.44 ± 0.23 ± 0.03 pb, where the first uncertainty is statistical and the second systematic.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
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DOI of Published Version
https://doi.org/10.1007/JHEP04(2014)091