Search for s -channel single-top-quark production in events with missing energy plus jets in p p ̄ collisions at s =1.96TeV

T. Aaltonen, S. Amerio, D. Amidei, A. Anastassov, A. Annovi,J. Antos, G. Apollinari,J. A. Appel,T. Arisawa, A. Artikov,J. Asaadi, W. Ashmanskas,B. Auerbach,A. Aurisano,F. Azfar,W. Badgett, T. Bae, A. Barbaro-Galtieri,V. E. Barnes, B. A. Barnett,P. Barria, P. Bartos,M. Bauce,F. Bedeschi, S. Behari, G. Bellettini, J. Bellinger, D. Benjamin,A. Beretvas,A. Bhatti,K. R. Bland, B. Blumenfeld,A. Bocci,A. Bodek,D. Bortoletto, J. Boudreau,A. Boveia,L. Brigliadori, C. Bromberg,E. Brucken, J. Budagov,H. S. Budd, K. Burkett,G. Busetto, P. Bussey,P. Butti,A. Buzatu, A. Calamba,S. Camarda, M. Campanelli,F. Canelli, B. Carls, D. Carlsmith, R. Carosi,S. Carrillo, B. Casal,M. Casarsa, A. Castro, P. Catastini,D. Cauz,V. Cavaliere,M. Cavalli-Sforza,A. Cerri,L. Cerrito, Y. C. Chen,M. Chertok,G. Chiarelli, G. Chlachidze,K. Cho,D. Chokheli,A. Clark,C. Clarke,M. E. Convery,J. Conway,M. Corbo,M. Cordelli,C. A. Cox,D. J. Cox,M. Cremonesi,D. Cruz,J. Cuevas, R. Culbertson,N. D'Ascenzo,M. Datta,P. De Barbaro, L. Demortier,M. Deninno,M. D'Errico,F. Devoto,A. Di Canto,B. Di Ruzza,J. R. Dittmann,S. Donati,M. D'Onofrio,M. Dorigo,A. Driutti, K. Ebina,R. Edgar, A. Elagin, R. Erbacher, S. Errede, B. Esham,S. Farrington,J. P. Fernández Ramos, R. Field,G. Flanagan,R. Forrest,M. Franklin,J. C. Freeman,H. Frisch,Y. Funakoshi, C. Galloni,A. F. Garfinkel,P. Garosi, H. Gerberich, E. Gerchtein,S. Giagu, V. Giakoumopoulou,K. Gibson,C. M. Ginsburg, N. Giokaris,P. Giromini, G. Giurgiu,V. Glagolev, D. Glenzinski,M. Gold, D. Goldin, A. Golossanov,G. Gomez,G. Gomez-Ceballos, M. Goncharov,O. González López,I. Gorelov,A. T. Goshaw, K. Goulianos, E. Gramellini,S. Grinstein, C. Grosso-Pilcher,J. Guimaraes Da Costa, S. R. Hahn, J. Y. Han, F. Happacher, K. Hara,M. Hare,R. F. Harr,T. Harrington-Taber, K. Hatakeyama,C. Hays,J. Heinrich,M. Herndon, A. Hocker,Z. Hong,W. Hopkins,S. Hou,R. E. Hughes, U. Husemann,M. Hussein, J. Huston,G. Introzzi,M. Iori,A. Ivanov,E. James,D. Jang, B. Jayatilaka,E. J. Jeon,S. Jindariani,M. Jones, K. K. Joo,S. Y. Jun,T. R. Junk,M. Kambeitz, T. Kamon,P. E. Karchin, A. Kasmi,Y. Kato,W. Ketchum,J. Keung,B. Kilminster, D. H. Kim, H. S. Kim,J. E. Kim,M. J. Kim, S. H. Kim, S. B. Kim,Y. J. Kim,Y. K. Kim, N. Kimura, M. Kirby, K. Knoepfel,K. Kondo,D. J. Kong, J. Konigsberg,A. V. Kotwal, M. Kreps,J. Kroll,M. Kruse, T. Kuhr, M. Kurata,A. T. Laasanen,S. Lammel,M. Lancaster,K. Lannon,G. Latino,H. S. Lee,J. S. Lee, S. Leo,S. Leone,J. D. Lewis, A. Limosani,E. Lipeles,A. Lister,H. Liu,Q. Liu,T. Liu, S. Lockwitz,A. Loginov,D. Lucchesi,A. Lucà, J. Lueck, P. Lujan,P. Lukens,G. Lungu, J. Lys,R. Lysak, R. Madrak,P. Maestro, S. Malik,G. Manca, A. Manousakis-Katsikakis,L. Marchese,F. Margaroli,P. Marino,M. Martínez,K. Matera,M. E. Mattson,A. Mazzacane, P. Mazzanti,R. McNulty,A. Mehta, P. Mehtala,C. Mesropian,T. Miao,D. Mietlicki,A. Mitra,H. Miyake, S. Moed, N. Moggi,C. S. Moon,R. Moore,M. J. Morello,A. Mukherjee,Th Muller, P. Murat, M. Mussini, J. Nachtman,Y. Nagai, J. Naganoma, I. Nakano, A. Napier, J. Nett, C. Neu,T. Nigmanov, L. Nodulman,S. Y. Noh, O. Norniella, L. Oakes,S. H. Oh,Y. D. Oh, I. Oksuzian, T. Okusawa, R. Orava, L. Ortolan, C. Pagliarone,E. Palencia,P. Palni,V. Papadimitriou,W. Parker,G. Pauletta,M. Paulini,C. Paus,T. J. Phillips,G. Piacentino,E. Pianori, J. Pilot,K. Pitts, C. Plager, L. Pondrom,S. Poprocki,K. Potamianos, A. Pranko,F. Prokoshin,F. Ptohos,G. Punzi, N. Ranjan,I. Redondo Fernández, P. Renton, M. Rescigno, F. Rimondi, L. Ristori,A. Robson,T. Rodriguez, S. Rolli,M. Ronzani, R. Roser, J. L. Rosner,F. Ruffini,A. Ruiz,J. Russ,V. Rusu,W. K. Sakumoto,Y. Sakurai, L. Santi,K. Sato,V. Saveliev, A. Savoy-Navarro, P. Schlabach, E. E. Schmidt, T. Schwarz,L. Scodellaro, F. Scuri, S. Seidel, Y. Seiya,A. Semenov,F. Sforza,S. Z. Shalhout,T. Shears,P. F. Shepard, M. Shimojima, M. Shochet, I. Shreyber-Tecker,A. Simonenko,K. Sliwa,J. R. Smith,F. D. Snider,Hao Song,V. Sorin,R. St. Denis, M. Stancari, D. Stentz,J. Strologas,Y. Sudo, A. Sukhanov, I. Suslov, K. Takemasa,Y. Takeuchi,J. Tang, M. Tecchio,P. K. Teng,J. Thom,E. Thomson,V. Thukral,D. Toback, S. Tokar, K. Tollefson,T. Tomura,D. Tonelli,S. Torre, D. Torretta, P. Totaro, M. Trovato,F. Ukegawa, S. Uozumi, G. Velev, C. Vellidis,C. Vernieri,M. Vidal,R. Vilar,J. Vizán,M. Vogel, G. Volpi,F. Vázquez,P. Wagner,R. Wallny, S. M. Wang, D. Waters,W. C. Wester, D. Whiteson,A. B. Wicklund,S. Wilbur,H. H. Williams,J. S. Wilson,P. Wilson,B. L. Winer,P. Wittich,S. Wolbers,H. Wolfe,T. Wright,X. Wu,Z. Wu,K. Yamamoto,D. Yamato,T. Yang,U. K. Yang,Y. C. Yang, W. M. Yao,G. P. Yeh,K. Yi,J. Yoh,K. Yorita,T. Yoshida, G. B. Yu,I. Yu,A. M. Zanetti,Y. Zeng,C. Zhou,S. Zucchelli

user-5f8411ab4c775e9685ff56d3（2014）

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摘要

The first search for single-top-quark production from the exchange of an s-channel virtual W boson using events with an imbalance in the total transverse energy, b-tagged jets, and no identified leptons is presented. Assuming the electroweak production of top quarks of mass 172.5 GeV/c(2) in the s channel, a cross section of 1.12(-0.57)(+0.61) (stat+syst) pb with a significance of 1.9 standard deviations is measured. This measurement is combined with the result obtained from events with an imbalance in total transverse momentum, b-tagged jets, and exactly one identified lepton, yielding a cross section of 1.36(-0.32)(+0.37) (stat+syst) pb, with a significance of 4.2 standard deviations.

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关键词

Top quark,Missing energy,Lepton,Quark,Electroweak interaction,Fermilab,Particle physics,Cross section (physics),Transverse plane,Physics,Engineering physics

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