/ Experiment-HEP arXiv:0803.0739


Evidence for production of single top quarks


Abazov, V.M. (Dubna, JINR) ; Abbott, B. (Oklahoma U.) ; Abolins, M. (Michigan State U.) ; Acharya, Bannanje Sripath (Tata Inst.) ; Adams, M. (Illinois U., Chicago) ; Adams, T. (Florida State U.) ; Aguilo, Ernest (Simon Fraser U.) ; Ahn, S.H. (Korea U., KODEL) ; Ahsan, M. (Kansas State U.) ; Alexeev, G.D. (Dubna, JINR) ; Alkhazov, G. (St. Petersburg, INP) ; Alton, A. (Michigan U.) ; Alverson, G. (Northeastern U.) ; Alves, G.A. (Rio de Janeiro, CBPF) ; Anastasoaie, M. (Nijmegen U.) ; Ancu, L.S. (Nijmegen U.) ; Andeen, T. (Northwestern U.) ; Anderson, S. (Arizona U.) ; Andrieu, B. (Paris U., VI-VII) ; Anzelc, M.S. (Northwestern U.) ; Aoki, M. (Fermilab) ; Arnoud, Y. (LPSC, Grenoble) ; Arov, M. (Louisiana Tech. U.) ; Arthaud, M. (DAPNIA, Saclay) ; Askew, A. (Florida State U.) ; Asman, B. (Lund U.) ; Assis Jesus, A.C.S. (Rio de Janeiro State U.) ; Atramentov, O. (Florida State U.) ; Avila, C. (Andes U., Bogota) ; Ay, C. (Mainz U., Inst. Phys.) ; Badaud, F. (Clermont-Ferrand U.) ; Baden, A. (Maryland U.) ; Bagby, L. (Fermilab) ; Baldin, B. (Fermilab) ; Bandurin, D.V. (Kansas State U.) ; Banerjee, P. (Tata Inst.) ; Banerjee, S. (Tata Inst.) ; Barberis, E. (Northeastern U.) ; Barfuss, A.-F. (Marseille, CPPM) ; Bargassa, P. (Rice U.) ; Baringer, Philip S. (Kansas U.) ; Barreto, J. (Rio de Janeiro, CBPF) ; Bartlett, J.F. (Fermilab) ; Bassler, U. (DAPNIA, Saclay) ; Bauer, D. (Imperial Coll., London) ; Beale, S. (Simon Fraser U.) ; Bean, A. (Kansas U.) ; Begalli, M. (Rio de Janeiro State U.) ; Begel, M. (Brookhaven) ; Belanger-Champagne, C. (Lund U.) ; Bellantoni, L. (Fermilab) ; Bellavance, A. (Fermilab) ; Benitez, J.A. (Michigan State U.) ; Beri, S.B. (Panjab U.) ; Bernardi, G. (Paris U., VI-VII) ; Bernhard, R. (Freiburg U.) ; Bertram, I. (Lancaster U.) ; Besancon, M. (DAPNIA, Saclay) ; Beuselinck, R. (Imperial Coll., London) ; Bezzubov, V.A. (Serpukhov, IHEP) ; Bhat, P.C. (Fermilab) ; Bhatnagar, V. (Panjab U.) ; Biscarat, C. (Lyon, IPN) ; Blazey, G. (Northern Illinois U.) ; Blekman, F. (Imperial Coll., London) ; Blessing, S. (Florida State U.) ; Bloch, D. (Louis Pasteur U., Strasbourg I) ; Bloom, Kenneth A. (Nebraska U.) ; Boehnlein, A. (Fermilab) ; Boline, D. (Boston U.) ; Bolton, T.A. (Kansas State U.) ; Boos, E.E. (Moscow State U.) ; Borissov, G. (Lancaster U.) ; Bose, T. (Brown U.) ; Brandt, A. (Texas U., Arlington) ; Brock, R. (Michigan State U.) ; Brooijmans, G. (Columbia U.) ; Bross, A. (Fermilab) ; Brown, D. (Virginia U.) ; Buchanan, N.J. (Florida State U.) ; Buchholz, D. (Northwestern U.) ; Buehler, M. (Virginia U.) ; Buescher, Volker (Bonn U.) ; Bunichev, V. (Moscow State U.) ; Burdin, S. (Lancaster U.) ; Burke, Susan Elizabeth (Arizona U.) ; Burnett, T.H. (Washington U., Seattle) ; Buszello, C.P. (Imperial Coll., London) ; Butler, J.M. (Boston U.) ; Calfayan, P. (Munich U.) ; Calvet, Samuel Pierre (Orsay, LAL) ; Cammin, J. (Rochester U.) ; Carvalho, W. (Rio de Janeiro State U.) ; Casey, B.C.K. (Fermilab) ; Castilla-Valdez, H. (CINVESTAV, IPN) ; Chakrabarti, S. (DAPNIA, Saclay) ; Chakraborty, D. (Northern Illinois U.) ; Chan, K. (Simon Fraser U.) ; Chan, K.M. (Notre Dame U.) ; Chandra, A. (UC, Riverside) ; Charles, F. (Louis Pasteur U., Strasbourg I) ; Cheu, E. (Arizona U.) ; Chevallier, F. (LPSC, Grenoble) ; Cho, D.K. (Boston U.) ; Choi, S. (Sungkyunkwan U.) ; Choudhary, B. (Delhi U.) ; Christofek, L. (Brown U.) ; Christoudias, T. (Imperial Coll., London) ; Cihangir, S. (Fermilab) ; Claes, D. (Nebraska U.) ; Coadou, Y. (Simon Fraser U.) ; Cooke, M. (Rice U.) ; Cooper, W.E. (Fermilab) ; Corcoran, M. (Rice U.) ; Couderc, F. (DAPNIA, Saclay) ; Cousinou, M.-C. (Marseille, CPPM) ; Crepe-Renaudin, Sabine (LPSC, Grenoble) ; Cutts, D. (Brown U.) ; Cwiok, M. (University Coll., Dublin) ; da Motta, H. (Rio de Janeiro, CBPF) ; Das, A. (Arizona U.) ; Davies, G. (Imperial Coll., London) ; De, K. (Texas U., Arlington) ; de Jong, S.J. (Nijmegen U.) ; De La Cruz-Burelo, E. (Michigan U.) ; De Oliveira Martins, C. (Rio de Janeiro State U.) ; Degenhardt, J.D. (Michigan U.) ; Deliot, F. (DAPNIA, Saclay) ; Demarteau, M. (Fermilab) ; Demina, R. (Rochester U.) ; Denisov, D. (Fermilab) ; Denisov, S.P. (Serpukhov, IHEP) ; Desai, S. (Fermilab) ; Diehl, H.T. (Fermilab) ; Diesburg, M. (Fermilab) ; Dominguez, A. (Nebraska U.) ; Dong, H. (SUNY, Stony Brook) ; Dudko, L.V. (Moscow State U.) ; Duflot, L. (Orsay, LAL) ; Dugad, S.R. (Tata Inst.) ; Duggan, D. (Florida State U.) ; Duperrin, A. (Marseille, CPPM) ; Dyer, J. (Michigan State U.) ; Dyshkant, A. (Northern Illinois U.) ; Eads, M. (Nebraska U.) ; Edmunds, D. (Michigan State U.) ; Ellison, J. (UC, Riverside) ; Elvira, V.D. (Fermilab) ; Enari, Y. (Brown U.) ; Eno, S. (Maryland U.) ; Ermolov, P. (Moscow State U.) ; Evans, H. (Indiana U.) ; Evdokimov, A. (Brookhaven) ; Evdokimov, V.N. (Serpukhov, IHEP) ; Ferapontov, A.V. (Kansas State U.) ; Ferbel, T. (Rochester U.) ; Fiedler, F. (Mainz U., Inst. Phys.) ; Filthaut, F. (Nijmegen U.) ; Fisher, W. (Fermilab) ; Fisk, H.E. (Fermilab) ; Fortner, M. (Northern Illinois U.) ; Fox, H. (Lancaster U.) ; Fu, S. (Fermilab) ; Fuess, S. (Fermilab) ; Gadfort, T. (Columbia U.) ; Galea, C.F. (Nijmegen U.) ; Gallas, E. (Fermilab) ; Garcia, C. (Rochester U.) ; Garcia-Bellido, A. (Washington U., Seattle) ; Gavrilov, V. (Moscow, ITEP) ; Gay, P. (Clermont-Ferrand U.) ; Geist, Walter M. (Louis Pasteur U., Strasbourg I) ; Gele, D. (Louis Pasteur U., Strasbourg I) ; Gerber, C.E. (Illinois U., Chicago) ; Gershtein, Y. (Florida State U.) ; Gillberg, D. (Simon Fraser U.) ; Ginther, G. (Rochester U.) ; Gollub, N. (Lund U.) ; Gomez, B. (Andes U., Bogota) ; Goussiou, A. (Washington U., Seattle) ; Grannis, P.D. (SUNY, Stony Brook) ; Greenlee, H. (Fermilab) ; Greenwood, Z.D. (Louisiana Tech. U.) ; Gregores, E.M. (ABC Federal U.) ; Grenier, Gerald Jean (Lyon, IPN) ; Gris, Ph. (Clermont-Ferrand U.) ; Grivaz, J.-F. (Orsay, LAL) ; Grohsjean, Alexander (Munich U.) ; Gruenendahl, Stefan (Fermilab) ; Grunewald, M.W. (University Coll., Dublin) ; Guo, F. (SUNY, Stony Brook) ; Guo, J. (SUNY, Stony Brook) ; Gutierrez, G. (Fermilab) ; Gutierrez, P. (Oklahoma U.) ; Haas, A. (Columbia U.) ; Hadley, N.J. (Maryland U.) ; Haefner, P. (Munich U.) ; Hagopian, S. (Florida State U.) ; Haley, J. (Princeton U.) ; Hall, I. (Michigan State U.) ; Hall, R.E. (Fresno State) ; Han, L. (Hefei, CUST) ; Harder, K. (Manchester U.) ; Harel, A. (Rochester U.) ; Harrington, R. (Northeastern U.) ; Hauptman, J.M. (Iowa State U.) ; Hauser, R. (Michigan State U.) ; Hays, J. (Imperial Coll., London) ; Hebbeker, T. (Aachen, Tech. Hochsch.) ; Hedin, D. (Northern Illinois U.) ; Hegeman, Jeroen Guido (NIKHEF, Amsterdam) ; Heinmiller, J.M. (Illinois U., Chicago) ; Heinson, Ann (UC, Riverside) ; Heintz, U. (Boston U.) ; Hensel, C. (Kansas U.) ; Herner, K. (SUNY, Stony Brook) ; Hesketh, G. (Northeastern U.) ; Hildreth, M.D. (Notre Dame U.) ; Hirosky, R. (Virginia U.) ; Hobbs, J.D. (SUNY, Stony Brook) ; Hoeneisen, B. (San Francisco de Quito U.) ; Hoeth, H. (Wuppertal U.) ; Hohlfeld, M. (Bonn U.) ; Hong, S.J. (Korea U., KODEL) ; Hossain, S. (Oklahoma U.) ; Houben, P. (NIKHEF, Amsterdam) ; Hu, Y. (SUNY, Stony Brook) ; Hubacek, Z. (Prague, Tech. U.) ; Hynek, V. (Charles U.) ; Iashvili, I. (SUNY, Buffalo) ; Illingworth, R. (Fermilab) ; Ito, A.S. (Fermilab) ; Jabeen, S. (Boston U.) ; Jaffre, M. (Orsay, LAL) ; Jain, S. (Oklahoma U.) ; Jakobs, K. (Freiburg U.) ; Jarvis, C. (Maryland U.) ; Jesik, R. (Imperial Coll., London) ; Johns, K. (Arizona U.) ; Johnson, C. (Columbia U.) ; Johnson, M. (Fermilab) ; Jonckheere, Alan M. (Fermilab) ; Jonsson, P. (Imperial Coll., London) ; Juste, A. (Fermilab) ; Kajfasz, E. (Marseille, CPPM) ; Kalinin, A.M. (Dubna, JINR) ; Kalk, J.M. (Louisiana Tech. U.) ; Kappler, S. (Aachen, Tech. Hochsch.) ; Karmanov, D. (Moscow State U.) ; Kasper, P.A. (Fermilab) ; Katsanos, I. (Columbia U.) ; Kau, D. (Florida State U.) ; Kaushik, V. (Texas U., Arlington) ; Kehoe, R. (Southern Methodist U.) ; Kermiche, S. (Marseille, CPPM) ; Khalatyan, N. (Fermilab) ; Khanov, A. (Oklahoma State U.) ; Kharchilava, A. (SUNY, Buffalo) ; Kharzheev, Y.M. (Dubna, JINR) ; Khatidze, D. (Columbia U.) ; Kim, T.J. (Korea U., KODEL) ; Kirby, M.H. (Northwestern U.) ; Kirsch, M. (Aachen, Tech. Hochsch.) ; Klima, B. (Fermilab) ; Kohli, J.M. (Panjab U.) ; Konrath, J.-P. (Freiburg U.) ; Korablev, V.M. (Serpukhov, IHEP) ; Kozelov, A.V. (Serpukhov, IHEP) ; Kraus, J. (Michigan State U.) ; Krop, D. (Indiana U.) ; Kuhl, T. (Mainz U., Inst. Phys.) ; Kumar, A. (SUNY, Buffalo) ; Kupco, A. (Prague, Inst. Phys.) ; Kurca, T. (Lyon, IPN) ; Kvita, J. (Charles U.) ; Lacroix, F. (Clermont-Ferrand U.) ; Lam, D. (Notre Dame U.) ; Lammers, S. (Columbia U.) ; Landsberg, G. (Brown U.) ; Lebrun, P. (Lyon, IPN) ; Lee, W.M. (Fermilab) ; Leflat, A. (Moscow State U.) ; Lellouch, J. (Paris U., VI-VII) ; Leveque, J. (Arizona U.) ; Li, J. (Texas U., Arlington) ; Li, L. (UC, Riverside) ; Li, Q.Z. (Fermilab) ; Lietti, S.M. (Sao Paulo, IFT) ; Lima, J.G.R. (Northern Illinois U.) ; Lincoln, D. (Fermilab) ; Linnemann, J. (Michigan State U.) ; Lipaev, V.V. (Serpukhov, IHEP) ; Lipton, R. (Fermilab) ; Liu, Y. (Hefei, CUST) ; Liu, Z. (Simon Fraser U.) ; Lobodenko, A. (St. Petersburg, INP) ; Lokajicek, M. (Prague, Inst. Phys.) ; Love, P. (Lancaster U.) ; Lubatti, H.J. (Washington U., Seattle) ; Luna, R. (Rio de Janeiro State U.) ; Lyon, A.L. (Fermilab) ; Maciel, A.K.A. (Rio de Janeiro, CBPF) ; Mackin, D. (Rice U.) ; Madaras, R.J. (UC, Berkeley) ; Mattig, Peter (Wuppertal U.) ; Magass, C. (Aachen, Tech. Hochsch.) ; Magerkurth, A. (Michigan U.) ; Mal, P.K. (Washington U., Seattle) ; Malbouisson, H.B. (Rio de Janeiro State U.) ; Malik, S. (Nebraska U.) ; Malyshev, V.L. (Dubna, JINR) ; Mao, H.S. (Fermilab) ; Maravin, Y. (Kansas State U.) ; Martin, B. (LPSC, Grenoble) ; McCarthy, R. (SUNY, Stony Brook) ; Melnitchouk, A. (Mississippi U.) ; Mendoza, L. (Andes U., Bogota) ; Mercadante, P.G. (Sao Paulo, IFT) ; Merkin, M. (Moscow State U.) ; Merritt, K.W. (Fermilab) ; Meyer, A. (Aachen, Tech. Hochsch.) ; Meyer, J. (Bonn U.) ; Millet, T. (Lyon, IPN) ; Mitrevski, J. (Columbia U.) ; Molina, J. (Rio de Janeiro State U.) ; Mommsen, R.K. (Manchester U.) ; Mondal, N.K. (Tata Inst.) ; Moore, R.W. (Simon Fraser U.) ; Moulik, T. (Kansas U.) ; Muanza, G.S. (Lyon, IPN) ; Mulders, M. (Fermilab) ; Mulhearn, M. (Columbia U.) ; Mundal, O. (Bonn U.) ; Mundim, L. (Rio de Janeiro State U.) ; Nagy, E. (Marseille, CPPM) ; Naimuddin, M. (Fermilab) ; Narain, M. (Brown U.) ; Naumann, N.A. (Nijmegen U.) ; Neal, H.A. (Michigan U.) ; Negret, J.P. (Andes U., Bogota) ; Neustroev, P. (St. Petersburg, INP) ; Nilsen, H. (Freiburg U.) ; Nogima, H. (Rio de Janeiro State U.) ; Novaes, S.F. (Sao Paulo, IFT) ; Nunnemann, T. (Munich U.) ; O'Dell, V. (Fermilab) ; O'Neil, D.C. (Simon Fraser U.) ; Obrant, G. (St. Petersburg, INP) ; Ochando, C. (Orsay, LAL) ; Onoprienko, D. (Kansas State U.) ; Oshima, N. (Fermilab) ; Osman, N. (Imperial Coll., London) ; Osta, J. (Notre Dame U.) ; Otec, R. (Prague, Tech. U.) ; Otero y Garzon, G.J. (Fermilab) ; Owen, M. (Manchester U.) ; Padley, B.Paul (Rice U.) ; Pangilinan, M. (Brown U.) ; Parashar, N. (Purdue U.) ; Park, S.-J. (Rochester U.) ; Park, S.K. (Korea U., KODEL) ; Parsons, J. (Columbia U.) ; Partridge, R. (Brown U.) ; Parua, N. (Indiana U.) ; Patwa, A. (Brookhaven) ; Pawloski, G. (Rice U.) ; Penning, B. (Freiburg U.) ; Perfilov, M. (Moscow State U.) ; Peters, K. (Manchester U.) ; Peters, Y. (Wuppertal U.) ; Petroff, P. (Orsay, LAL) ; Petteni, M. (Imperial Coll., London) ; Piegaia, R. (Buenos Aires U.) ; Piper, J. (Michigan State U.) ; Pleier, Marc-Andre (Bonn U.) ; Podesta-Lerma, P.L.M. (CINVESTAV, IPN) ; Podstavkov, V.M. (Fermilab) ; Pogorelov, Y. (Notre Dame U.) ; Pol, M.-E. (Rio de Janeiro, CBPF) ; Polozov, P. (Moscow, ITEP) ; Pope, B.G. (Michigan State U.) ; Popov, A.V. (Serpukhov, IHEP) ; Potter, C. (Simon Fraser U.) ; Prado da Silva, W.L. (Rio de Janeiro State U.) ; Prosper, H.B. (Florida State U.) ; Protopopescu, S. (Brookhaven) ; Qian, J. (Michigan U.) ; Quadt, A. (Bonn U.) ; Quinn, B. (Mississippi U.) ; Rakitine, A. (Lancaster U.) ; Rangel, M.S. (Rio de Janeiro, CBPF) ; Ranjan, K. (Delhi U.) ; Ratoff, P.N. (Lancaster U.) ; Renkel, P. (Southern Methodist U.) ; Reucroft, S. (Northeastern U.) ; Rich, P. (Manchester U.) ; Rieger, J. (Indiana U.) ; Rijssenbeek, M. (SUNY, Stony Brook) ; Ripp-Baudot, Isabelle (Louis Pasteur U., Strasbourg I) ; Rizatdinova, F. (Oklahoma State U.) ; Robinson, S. (Imperial Coll., London) ; Rodrigues, R.F. (Rio de Janeiro State U.) ; Rominsky, M. (Oklahoma U.) ; Royon, C. (DAPNIA, Saclay) ; Rubinov, P. (Fermilab) ; Ruchti, R. (Notre Dame U.) ; Safronov, G. (Moscow, ITEP) ; Sajot, G. (LPSC, Grenoble) ; Sanchez-Hernandez, A. (CINVESTAV, IPN) ; Sanders, M.P. (Paris U., VI-VII) ; Santoro, A. (Rio de Janeiro State U.) ; Savage, G. (Fermilab) ; Sawyer, L. (Louisiana Tech. U.) ; Scanlon, T. (Imperial Coll., London) ; Schaile, D. (Munich U.) ; Schamberger, R.Dean (SUNY, Stony Brook) ; Scheglov, Y. (St. Petersburg, INP) ; Schellman, H. (Northwestern U.) ; Schliephake, T. (Wuppertal U.) ; Schwanenberger, C. (Manchester U.) ; Schwartzman, Ariel G. (Princeton U.) ; Schwienhorst, R. (Michigan State U.) ; Sekaric, J. (Florida State U.) ; Severini, H. (Oklahoma U.) ; Shabalina, E. (Illinois U., Chicago) ; Shamim, M. (Kansas State U.) ; Shary, V. (DAPNIA, Saclay) ; Shchukin, A.A. (Serpukhov, IHEP) ; Shivpuri, R.K. (Delhi U.) ; Siccardi, V. (Louis Pasteur U., Strasbourg I) ; Simak, V. (Prague, Tech. U.) ; Sirotenko, V. (Fermilab) ; Skubic, P. (Oklahoma U.) ; Slattery, P. (Rochester U.) ; Smirnov, D. (Notre Dame U.) ; Snow, G.R. (Nebraska U.) ; Snow, J. (Langston U.) ; Snyder, S. (Brookhaven) ; Soldner-Rembold, S. (Manchester U.) ; Sonnenschein, L. (Paris U., VI-VII) ; Sopczak, A. (Lancaster U.) ; Sosebee, M. (Texas U., Arlington) ; Soustruznik, K. (Charles U.) ; Spurlock, B. (Texas U., Arlington) ; Stark, J. (LPSC, Grenoble) ; Steele, J. (Louisiana Tech. U.) ; Stolin, V. (Moscow, ITEP) ; Stoyanova, D.A. (Serpukhov, IHEP) ; Strandberg, J. (Michigan U.) ; Strandberg, S. (Lund U.) ; Strang, Michael Allen (SUNY, Buffalo) ; Strauss, E. (SUNY, Stony Brook) ; Strauss, Michael G. (Oklahoma U.) ; Strohmer, R. (Munich U.) ; Strom, Derek A. (Northwestern U.) ; Stutte, L. (Fermilab) ; Sumowidagdo, S. (Florida State U.) ; Svoisky, P. (Notre Dame U.) ; Sznajder, A. (Rio de Janeiro State U.) ; Tamburello, P. (Arizona U.) ; Tanasijczuk, A. (Buenos Aires U.) ; Taylor, W. (Simon Fraser U.) ; Temple, J. (Arizona U.) ; Tiller, B. (Munich U.) ; Tissandier, F. (Clermont-Ferrand U.) ; Titov, Maxim P. (DAPNIA, Saclay) ; Tokmenin, V.V. (Dubna, JINR) ; Toole, T. (Maryland U.) ; Torchiani, I. (Freiburg U.) ; Trefzger, T. (Mainz U., Inst. Phys.) ; Tsybychev, D. (SUNY, Stony Brook) ; Tuchming, B. (DAPNIA, Saclay) ; Tully, C. (Princeton U.) ; Tuts, P.M. (Columbia U.) ; Unalan, R. (Michigan State U.) ; Uvarov, L. (St. Petersburg, INP) ; Uvarov, S. (St. Petersburg, INP) ; Uzunyan, S. (Northern Illinois U.) ; Vachon, B. (Simon Fraser U.) ; van den Berg, P.J. (NIKHEF, Amsterdam) ; Van Kooten, R. (Indiana U.) ; van Leeuwen, W.M. (NIKHEF, Amsterdam) ; Varelas, N. (Illinois U., Chicago) ; Varnes, E.W. (Arizona U.) ; Vasilyev, I.A. (Serpukhov, IHEP) ; Vaupel, M. (Wuppertal U.) ; Verdier, P. (Lyon, IPN) ; Vertogradov, L.S. (Dubna, JINR) ; Verzocchi, M. (Fermilab) ; Vetterli, M. (Simon Fraser U.) ; Villeneuve-Seguier, F. (Imperial Coll., London) ; Vint, P. (Imperial Coll., London) ; Vokac, P. (Prague, Tech. U.) ; Von Toerne, E. (Kansas State U.) ; Voutilainen, M. (Princeton U.) ; Wagner, R. (Princeton U.) ; Wahl, H.D. (Florida State U.) ; Wang, L. (Maryland U.) ; Wang, M.H.L.S. (Fermilab) ; Warchol, J. (Notre Dame U.) ; Watts, G. (Washington U., Seattle) ; Wayne, M. (Notre Dame U.) ; Weber, G. (Mainz U., Inst. Phys.) ; Weber, M. (Fermilab) ; Welty-Rieger, L. (Indiana U.) ; Wenger, A. (Freiburg U.) ; Wermes, N. (Bonn U.) ; Wetstein, M. (Maryland U.) ; White, A. (Texas U., Arlington) ; Wicke, D. (Wuppertal U.) ; Wilson, G.W. (Kansas U.) ; Wimpenny, S.J. (UC, Riverside) ; Wobisch, M. (Louisiana Tech. U.) ; Wood, D.R. (Northeastern U.) ; Wyatt, T.R. (Manchester U.) ; Xie, Y. (Brown U.) ; Yacoob, S. (Northwestern U.) ; Yamada, R. (Fermilab) ; Yan, M. (Maryland U.) ; Yasuda, T. (Fermilab) ; Yatsunenko, Y.A. (Dubna, JINR) ; Yip, Kin (Brookhaven) ; Yoo, H.D. (Brown U.) ; Youn, S.W. (Northwestern U.) ; Yu, J. (Texas U., Arlington) ; Zatserklyaniy, A. (Northern Illinois U.) ; Zeitnitz, C. (Wuppertal U.) ; Zhao, T. (Washington U., Seattle) ; Zhou, B. (Michigan U.) ; Zhu, J. (SUNY, Stony Brook) ; Zielinski, M. (Rochester U.) ; Zieminska, Daria (Indiana U.) ; Zieminski, A. (Indiana U.) ; Zivkovic, Lidija (Columbia U.) ; Zutshi, V. (Northern Illinois U.) ; Zverev, E.G. (Moscow State U.)

Published in: Phys.Rev.
Year: 2008
Vol.: D78
Page No: 012005
Pages: 51

Abstract: We present first evidence for the production of single top quarks in the D0 detector at the Fermilab Tevatron ppbar collider. The standard model predicts that the electroweak interaction can produce a top quark together with an antibottom quark or light quark, without the antiparticle top quark partner that is always produced from strong coupling processes. Top quarks were first observed in pair production in 1995, and since then, single top quark production has been searched for in ever larger datasets. In this analysis, we select events from a 0.9 fb-1 dataset that have an electron or muon and missing transverse energy from the decay of a W boson from the top quark decay, and two, three, or four jets, with one or two of the jets identified as originating from a b hadron decay. The selected events are mostly backgrounds such as W+jets and ttbar events, which we separate from the expected signals using three multivariate analysis techniques: boosted decision trees, Bayesian neural networks, and matrix element calculations. A binned likelihood fit of the signal cross section plus background to the data from the combination of the results from the three analysis methods gives a cross section for single top quark production of 4.7 +- 1.3 pb. The probability to measure a cross section at this value or higher in the absence of signal is 0.014%, corresponding to a 3.6 standard deviation significance. The measured cross section value is compatible at the 10% level with the standard model prediction for electroweak top quark production.

Web-Page: http://pdglive.lbl.gov/REFERENCE_info1.brl?slacrpp=PHRVA,D78,012005; http://www.physorg.com/news138628170.html; http://inspirebeta.net/record/780775/files/fig_10a_normalized_InvariantMass_AllJets.png; http://inspirebeta.net/record/780775/files/fig_10b_normalized_BTaggedTopMass.png; http://inspirebeta.net/record/780775/files/fig_10c_normalized_InvariantMass_Jet1Jet2W.png; http://inspirebeta.net/record/780775/files/fig_10d_normalized_CosBJetLep.png; http://inspirebeta.net/record/780775/files/fig_10e_normalized_QTimesEta.png; http://inspirebeta.net/record/780775/files/fig_10f_normalized_HTalljets.png; http://inspirebeta.net/record/780775/files/fig_10g_normalized_InvariantMass_AllJets_MinusBestJet.png; http://inspirebeta.net/record/780775/files/fig_10h_normalized_WTransverseMass.png; http://inspirebeta.net/record/780775/files/fig_10i_normalized_CosLepTaggedTop.png; http://inspirebeta.net/record/780775/files/fig_11_Decision_Tree.png; http://inspirebeta.net/record/780775/files/fig_12_BNN_RuleFit.png; 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