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Exclusion of exotic top-like quarks with4/3electric charge using jet-charge tagging in single-leptontt¯events at CDF

T. Aaltonen,S. Amerio,D. Amidei,A. Anastassov,A. Annovi,J. Antoš,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. Bartoš,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,V. Boisvert,D. Bortoletto,J. Boudreau,A. Boveia,L. Brigliadori,C. Bromberg,E. Brücken,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,M. A. Ciocci,A. Clark,Christopher 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. Dittmann,M. D’Onofrio,S. Donati,M. Dorigo,A. Driutti,K. Ebina,R. C. Edgar,A. Elagin,R. Erbacher,S. Errede,B. Esham,R. Eusebi,S. M. Farrington,J. P. Fernández Ramos,R. D. Field,G. Flanagan,R. Forrest,M. Franklin,J. Freeman,H. Frisch,Y. Funakoshi,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. Gómez,G. Gómez-Ceballos,M. Goncharov,O. González López,I. Gorelov,A. T. Goshaw,K. Goulianos,E. Gramellini,S. Grinstein,C. Grosso-Pilcher,R. C. Group,J. Guimarães da Costa,S. R. Hahn,J. Han,F. Happacher,K. Hara,M. Hare,R. Harr,T. Harrington-Taber,K. Hatakeyama,C. P. Hays,J. Heinrich,M. Herndon,A. Höcker,Z. Hong,W. H. 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. B. Kim,S. H. Kim,Y. J. Kim,Y. K. Kim,N. Kimura,M. Kirby,K. J. Knoepfel,K. Kondo,D. J. Kong,J. Königsberg,A. Kotwal,M. Kreps,J. Kroll,M. C. 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,Andrea Di Luca,D. Lucchesi,J. Lueck,P. Lujan,P. Lukens,G. Lungu,J. Lys,R. Lysák,R. Madrak,P. Maestro,S. Malik,G. Manca,A. Manousakis-Katsikakis,F. Margaroli,P. Marino,M. Martı́nez,K. Matera,M. E. Mattson,A. Mazzacane,P. Mazzanti,K. S. McFarland,R. McNulty,A. Mehta,P. Mehtälä,C. Mesropian,T. Miao,D. Mietlicki,A. Mitra,H. Miyake,S. Moëd,N. Moggi,C. S. Moon,R. W. Moore,M. J. Morello,A. Mukherjee,Th. Müller,P. Murat,M. Mussini,J. M. 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,P. Renton,M. Rescigno,F. Rimondi,L. Ristori,A. Robson,T. Rodriguez,S. Rolli,M. Ronzani,R. Roser,Jonathan 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. C. Seidel,Y. Seiya,A. Semenov,F. Sforza,S. Shalhout,T. Shears,P. F. Shepard,M. Shimojima,M. J. Shochet,I. Shreyber-Tecker,А. Симоненко,P. Sinervo,K. Sliwa,J. R. Smith,F. D. Snider,H. Song,V. Sorı́n,M. Stancari,R. St. Denis,B. Stelzer,O. Stelzer-Chilton,D. Stentz,J. Strologas,Y. Sudo,А. Суханов,И. Суслов,K. Takemasa,Y. Takeuchi,J. Tang,M. Tecchio,P. K. Teng,J. Thom,E. Thomson,V. Thukral,D. Toback,S. Tokár,K. Tollefson,T. Tomura,D. Tonelli,S. Torre,D. Torretta,P. Totaro,M. Trovato,F. Ukegawa,S. Uozumi,F. Vázquez,G. Velev,C. Vellidis,C. Vernieri,M. Vidal,R. Vilar,J. Vizán,M. Vogel,G. Volpi,P. Wagner,R. Wallny,S. M. Wang,A. Warburton,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, Tianyi Yang,U. K. Yang,Y. Yang,W-M. Yao,G. P. Yeh,K. Yi,J. Yoh,K. Yorita,T. Yoshida,G. B. Yu,I. Yu,A. Zanetti,Y. Zeng,C. Zhou,S. Zucchelli

Physical review(2013)

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Abstract
We report on a measurement of the top-quark electric charge in tt¯ events in which one W boson originating from the top-quark pair decays into leptons and the other into hadrons. The event sample was collected by the CDF II detector in s=1.96 TeV proton-antiproton collisions and corresponds to 5.6 fb−1. We find the data to be consistent with the standard model and exclude the existence of an exotic quark with −4/3 electric charge and mass of the conventional top quark at the 99% confidence level.4 MoreReceived 16 April 2013DOI:https://doi.org/10.1103/PhysRevD.88.032003© 2013 American Physical Society
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Key words
quarks,exclusion,top-like,jet-charge,single-lepton
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