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(-0.24)(+0.26) pb. The probability of observing a statistical fluctuation of the background to a cross section of the observed size or larger is 1.8 x 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.
Titolo: | Observation of s-Channel Production of Single Top Quarks at the Tevatron | |
Autori: | ||
Data di pubblicazione: | 2014 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevLett.112.231803 | |
Handle: | http://hdl.handle.net/11384/59594 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |