This article is about the Fermilab experiment. For other uses, see Doughnut (disambiguation).
Schematic overview of the DONUT detector
DONUT (Direct observation of the nu tau, E872) was an experiment at Fermilab dedicated to the search for tau neutrino interactions. The detector operated during a few months in the summer of 1997, and successfully detected the tau neutrino.[1] It confirmed the existence of the last lepton predicted by the Standard Model.[2] The data from the experiment was also used to put an upper limit on the tau neutrino magnetic moment[3] and measure its interaction cross section.[4]
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K. Kodama et al. (DONUT Collaboration) (2001). "Observation of tau neutrino interactions". Physics Letters B. 504 (3): 218–224. arXiv:hep-ex/0012035. Bibcode:2001PhLB..504..218D. doi:10.1016/S0370-2693(01)00307-0.
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"Physicists Find First Direct Evidence for Tau Neutrino at Fermilab" (Press release). Fermilab. 20 July 2000.
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K. Kodama et al. (DONUT Collaboration) (2008). "A first measurement of the interaction cross section of the tau neutrino". Physical Review D. 78 (5): 052002. arXiv:0711.0728. Bibcode:2008PhRvD..78e2002K. doi:10.1103/PhysRevD.78.052002. S2CID 118667527.
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R. Schwienhorst et al. (DONUT Collaboration) (2001). "A new upper limit for the tau-neutrino magnetic moment". Physics Letters B. 513 (1–2): 23–29. arXiv:hep-ex/0102026. Bibcode:2001PhLB..513...23D. doi:10.1016/S0370-2693(01)00746-8.
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