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.

Observation of s-Channel Production of Single Top Quarks at the Tevatron

INTROZZI, GIANLUCA;
2014-01-01

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(-0.24)(+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.
2014
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Esperti anonimi
Inglese
Internazionale
ELETTRONICO
112
231803
HIGH ENERGY PHYSICS; PARTICLE PHYSICS; CDF FERMILAB
767
info:eu-repo/semantics/article
262
T., Aaltonen; V. M., Abazov; B., Abbott; B. S., Acharya; M., Adams; T., Adams; J. P., Agnew; G. D., Alexeev; G., Alkhazov; A., Alton; S., Amerio; D., ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/1086596
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