Measurement of the mass difference between top and antitop quarks 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 Barbarogaltieri , 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 Cavallisforza , A Cerri , L Cerrito , Y Chen , M Chertok , G Chiarelli , G Chlachidze , K Cho , D Chokheli , M A Ciocci , A R Clark , Christopher R Clarke , M R 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 , F Devoto , M D Errico , A Di Canto , B Di Ruzza , J R Dittmann , M D Onofrio , S Donati , M Dorigo , A Driutti , K Ebina , Ryan Christopher Edgar , A Elagin , R Erbacher , S Errede , B Esham , R Eusebi , S Farrington , J Fernandez Ramos , R D Field , G Flanagan , R Forrest , Matthew 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 Gomez , G Gomezceballos , M Goncharov , O Gonzalez Lopez , I Gorelov , A T Goshaw , K Goulianos , E Gramellini , S Grinstein , C Grossopilcher , J Guimaraes Da Costa , Seungyong Hahn , J Han , F Happacher , K Hara , M Hare , R F Harr , T Harringtontaber , K Hatakeyama , C Hays , J Heinrich , M Herndon , A Hocker , Z Hong , Webster D Hopkins , S Hou , R E Hughes , U Husemann , J Huston , G Introzzi , M Iori , A Ivanov , E James , D Jang , B Jayatilaka , Eunseok Jeon , S Jindariani , M Jones , Kisu Joo , S Jun , T R Junk , M Kambeitz , T Kamon , P E Karchin , A Kasmi , Y Kato , W Ketchum , J Keung , B Kilminster , Daehyun Kim , Hyemi Kim , Jongjin Kim , Min Kim , Seonghoon Kim , Yonghoon Kim , N Kimura , M H Kirby , K J Knoepfel , K Kondo , Deyun 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 , Hankyu Lee , J Lee , S Leo , S Leone , J D Lewis , A Limosani , E Lipeles , Hongxuan Liu , Qinghua Liu , Tao Liu , S Lockwitz , A Loginov , D Lucchesi , J Lueck , P Lujan , P Lukens , G Lungu , J Lys , R Lysak , R Madrak , P Maestro , S Malik , G Manca , A Manousakiskatsikakis , F Margaroli , Perfecto Marino , M Martinez , K Matera , M E Mattson , A Mazzacane , P Mazzanti , R Mcnulty , Andrew Mehta , P Mehtala , C Mesropian , T Miao , D Mietlicki , A Mitra , Hiroyuki Miyake , S Moed , N Moggi , Chisook Moon , Robert J 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 , Sungkee Noh , O Norniella , L Oakes , S Oh , Yeonmok 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 , F Prokoshin , A Pranko , F Ptohos , G Punzi , N Ranjan , I Redondo Fernandez , P Renton , M Rescigno , T Riddick , 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 , A Safonov , W K Sakumoto , Yoshinori Sakurai , L Santi , Keiko Sato , V L Saveliev , A Savoynavarro , 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 Shreybertecker , A Simonenko , P Sinervo , K Sliwa , J G Smith , F D Snider , V Sorin , Hongjun Song , M Stancari , R St Denis , B Stelzer , O Stelzerchilton , D Stentz , J Strologas , Y Sudo , A Sukhanov , I Suslov , K Takemasa , Yuuichi Takeuchi , J Tang , M Tecchio , Pingkun 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 , F Vazquez , G Velev , C Vellidis , Caterina Vernieri , M Vidal , R Vilar , J Vizan , M Vogel , G Volpi , P Wagner , R Wallny , Shuyan Wang , A Warburton , David J Waters , W C Wester , D Whiteson , A B Wicklund , S Wilbur , H H Williams , J P Wilson , P Wilson , B L Winer , P Wittich , S Wolbers , H Wolfe , Teresa L Wright , Xin Wu , Zhigang Wu , K Yamamoto , D Yamato , Tahone Yang , Unki Yang , Yaju Yang , W M Yao , Gengchang Yeh , K Yi , J Yoh , K Yorita , Tetsuya Yoshida , Guangchuang Yu , I Yu , A Zanetti , Y Zeng , C Zhou , S Zucchelli PHYSICAL REVIEW D（2013）
摘要
We present a measurement of the mass difference between top (t) and antitop ((t) over bar) quarks using t (t) over bar candidate events reconstructed in the final state with one lepton and multiple jets. We use the full data set of Tevatron root s = 1.96 TeV proton-antiproton collisions recorded by the CDF II detector, corresponding to an integrated luminosity of 8.7 fb(-1). We estimate event by event the mass difference to construct templates for top pair signal events and background events. The resulting mass difference distribution in data compared to signal and background templates using a likelihood fit yields Delta M-top = M-t - M-(t) over bar = -1.95 +/- 1.11(stat) +/- 0.59(syst) GeV/c(2) and is in agreement with the standard model prediction of no mass difference. DOI.10.1103/PhysRevD.87.052013
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mass difference, measurement
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