Evidence for s-Channel Single-Top-Quark Production in Events with One Charged Lepton and Two Jets at CDF

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URI: http://hdl.handle.net/10902/13903
ISSN: 0031-9007
ISSN: 1079-7114
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Author
Aaltonen, Timo Antero; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, Gervasio; Palencia Cortezón, José Enrique; Ruiz Jimeno, Alberto; Scodellaro, Luca; Vilar Cortabitarte, Rocío; Vizán García, Jesús Manuel
Date
2014-06
Derechos
© 2014 American Physical Society
Publicado en
Phys. Rev. Lett. Vol. 112, Num. 23, Pag. 231804 (2014)
Publisher
American Physical Society
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Abstract:
We report evidence for s-channel single-top-quark production in proton-antiproton collisions at center-of-mass energy vs=1.96 TeV using a data set that corresponds to an integrated luminosity of 9.4 fb-1 collected by the Collider Detector at Fermilab. We select events consistent with the s-channel process including two jets and one leptonically decaying W boson. The observed significance is 3.8 standard deviations with respect to the background-only prediction. Assuming a top-quark mass of 172.5 GeV/c2, we measure the s-channel cross section to be 1.41+0.44-0.42 pb.
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