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Observation of s-channel production of single top quarks at the Tevatron

Abstract : We report the first observation of single-top-quark production in the s channel through the combination of the CDF and D0 measurements of the cross section in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV. The data correspond to total integrated luminosities of up to 9.7 fb-1 per experiment. The measured cross section is $\sigma_s = 1.29^{+0.26}_{-0.24}$ pb. The probability of observing a statistical fluctuation of the background to a cross section of the observed size or larger is $1.8 \times 10^{-10}$, corresponding to a significance of 6.3 standard deviations for the presence of an s-channel contribution to the production of single-top quarks.
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Contributor : Emmanuelle Vernay <>
Submitted on : Monday, February 24, 2014 - 1:44:48 PM
Last modification on : Thursday, February 25, 2021 - 10:58:21 AM

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T. Aaltonen, G. Sajot, J. Stark, S. Greder, F. Miconi, et al.. Observation of s-channel production of single top quarks at the Tevatron. Physical Review Letters, American Physical Society, 2014, 112, pp.231803. ⟨10.1103/PhysRevLett.112.231803⟩. ⟨in2p3-00951200⟩



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