Journal article
Evidence for s -channel single-top-quark production in events with one charged lepton and two jets at CDF
T Aaltonen, S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari, JA Appel, T Arisawa, A Artikov, J Asaadi, W Ashmanskas, B Auerbach, A Aurisano, F Azfar, W Badgett, T Bae, A Barbaro-Galtieri, VE Barnes, BA Barnett Show all
Physical Review Letters | Published : 2014
Abstract
We report evidence for s-channel single-top-quark production in proton-antiproton collisions at center-of-mass energy s=1.96TeV using a data set that corresponds to an integrated luminosity of 9.4fb-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 172.5GeV/c2, we measure the s-channel cross section to be 1.41-0.42+0.44pb. © 2014 American Physical Society.
Grants
Awarded by U.S. Department of Energy
Funding Acknowledgements
We thank the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported by the U.S. Department of Energy and National Science Foundation, the Italian Istituto Nazionale di Fisica Nucleare, the Ministry of Education, Culture, Sports, Science and Technology of Japan, the Natural Sciences and Engineering Research Council of Canada, the National Science Council of the Republic of China, the Swiss National Science Foundation, the A. P. Sloan Foundation, the Bundesministerium fur Bildung und Forschung, Germany, the Korean World Class University Program, the National Research Foundation of Korea, the Science and Technology Facilities Council and the Royal Society, United Kingdom, the Russian Foundation for Basic Research, the Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio 2010, Spain, the Slovak R&D Agency, the Academy of Finland, the Australian Research Council (ARC), and the EU community Marie Curie Fellowship Contract No. 302103.