Observation of associated production of a Z boson with a D meson in the forward region
Author(s)
The LHCb Collaboration; Ilten, Philip J; Williams, Michael
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© 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.
Date issued
2014Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
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