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http://acervodigital.unesp.br/handle/11449/24049- Title:
- Measurement of the t-channel single top quark production cross section
- Abazov, V. M.
- Abbott, B.
- Abolins, M.
- Acharya, B. S.
- Adams, M.
- Adams, I.
- Aguilo, E.
- Ahsan, M.
- Alexeev, G. D.
- Alkhazov, G.
- Alton, A.
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- BackusMayes, J.
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- Malyshev, V. L.
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- Martin, B.
- McCarthy, R.
- McGivern, C. L.
- Meijer, M. M.
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- Meyer, J.
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- Moore, R. W.
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- Neal, H. A.
- Negret, J. P.
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- Novaes, Sérgio Ferraz
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- Sanders, M. P.
- Sanghi, B.
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- Sosebee, M.
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- Strandberg, J.
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- Wahl, H. D.
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- Watts, G.
- Wayne, M.
- Weber, G.
- Weber, M.
- Welty-Rieger, L.
- Wenger, A.
- Wetstein, M.
- White, A.
- Wicke, D.
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- Zhu, J.
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- Zivkovic, L.
- Zutshi, V.
- Zverev, E. G.
- Michigan State University
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- Department of Energy (DOE) and National Science Foundation (NSF) - USA
- Institut national de physique nucléaire et de physique des particules (IN2P3/CNRS)
- Rosatom State Atomic Energy Corporation (ROSATOM)
- Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
- Department of Science and Technology (DST) - India
- Colciencias (Colombia)
- Consejo Nacional de Ciencia y Tecnología (CONACYT)
- Korea Science and Engineering Foundation (KOSEF)
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
- Foundation for Fundamental Research on Matter (FOM)
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- Bundesministerium für Bildung und Forschung (BMBF)
- Science Foundation Ireland (SFI)
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- CAS and CNSF (China)
- Alexander von Humboldt Foundation
- The do Collaboration reports direct evidence for electroweak production of single top quarks through the t-channel exchange of a virtual W boson. This is the first analysis to isolate an individual single top quark production channel. We select events containing an isolated electron or muon, missing transverse energy, and two, three or four jets from 2.3 fb(-1) of p (p) over bar collisions at the Fermilab Tevatron Collider. One or two of the jets are identified as containing a b hadron. We combine three multivariate techniques optimized for the t-channel process to measure the t- and s-channel cross sections simultaneously. We measure cross sections of 3.14(-0.80)(+0.94) pb for the t-channel and 1.05 +/- 0.81 pb for the s-channel. The measured t-channel result is found to have a significance of 4.8 standard deviations and is consistent with the standard model prediction. (C) 2009 Elsevier B.V. All rights reserved.
- 4-Jan-2010
- Physics Letters B. Amsterdam: Elsevier B.V., v. 682, n. 4-5, p. 363-369, 2010.
- 363-369
- Elsevier B.V.
- http://dx.doi.org/10.1016/j.physletb.2009.11.038
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/24049
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