Observation of s-Channel Production of Single Top Quarks at the Tevatron
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Aaltonen, Timo Antero; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, Gervasio




Fecha
2014-06Derechos
© 2014 American Physical Society
Publicado en
Phys. Rev. Lett. Vol. 112, Num. 23, Pag. 231803 (2014)
Editorial
American Physical Society
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Resumen/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 ss=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 1.8×10-10, 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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