Measurement of leptonic asymmetries and top-quark polarization in t(t)over-bar production

V M Abazov, B Abbott, B S Acharya,Mary Beth Adams,Todd Adams, G D Alexeev, G Alkhazov,A Alton,G Alverson, A Askew,S Atkins, K Augsten,C Avila,F Badaud,L Bagby, B Baldin,D V Bandurin,Sw Banerjee, E Barberis, P Baringer,J F Bartlett,U Bassler, V E Bazterra,A Bean,M Begalli, L Bellantoni, S B Beri, G Bernardi, R Bernhard,I Bertram, M Besancon,R Beuselinck, P C Bhat,Suresh K Bhatia, V Bhatnagar,G Blazey,S Blessing,K Bloom,A Boehnlein,D Boline,E E Boos, G Borissov, T K Bose,A Brandt,Oleg Brandt, R Brock,A Bross,D N Brown,James D Brown,X B Bu,M Buehler,V Buescher,V Bunichev,S Burdin, C P Buszello,E Camachoperez,B C K Casey,H Castillavaldez, S Caughron, S Chakrabarti,D Chakraborty,K M Chan,A Chandra,E Chapon,G Chen,S Chevalierthery,D K Cho,Sung Won Cho,Sungho Choi,B Choudhary, S Cihangir, D Claes,J Clutter, M Cooke,W E Cooper, M Corcoran,F Couderc, M C Cousinou,A Croc, D Cutts,Ananda Kumar Das,G Davies,S J De Jong,E De La Cruzburelo,F Deliot, R Demina,D Denisov, S P Denisov,S Desai,C Deterre,K Devaughan,H T Diehl, M Diesburg,P F Ding,A Dominguez, A K Dubey,L V Dudko, D Duggan,A Duperrin,S Dutt,A Dyshkant, M Eads, D Edmunds, J Ellison, V D Elvira, Y Enari,H Evans,A Evdokimov,V N Evdokimov,G Facini,Lei Feng, T Ferbel, F Fiedler,F Filthaut, W Fisher,H E Fisk,M Fortner,H Fox,S Fuess, A Garciabellido, J A Garciagonzalez,G A Garciaguerra, V Gavrilov, P Gay,W Geng,D Gerbaudo, C E Gerber,Y Gershtein,G Ginther,G Golovanov, A Goussiou,P D Grannis,S Greder,H Greenlee,G Grenier,Ph Gris,J F Grivaz,A Grohsjean, S Gruenendahl, M W Gruenewald, T Guillemin,Gustavo Gutierrez,P Gutierrez, S Hagopian, J Haley, L Han, K Harder, A Harel, J M Hauptman, J Hays,T Head, T Hebbeker, D Hedin,H Hegab,A P Heinson, U Heintz, C Hensel,I Herediade La Cruz,K Herner, G Hesketh, M D Hildreth, R Hirosky,T Hoang,J D Hobbs,B Hoeneisen,J Hogan, M Hohlfeld,I Howley, Z Hubacek, V Hynek, I Iashvili,Y Ilchenko,R Illingworth,A S Ito, S Jabeen,M Jaffre,A Jayasinghe,M S Jeong,R Jesik, K Johns, E D Johnson,Marvin Johnson,A Jonckheere,P Jonsson, Jitendra A Joshi,A W Jung,A Juste, K Kaadze,E Kajfasz,D Karmanov, P A Kasper,I Katsanos, R Kehoe,S Kermiche, N Khalatyan, A Khanov, A Kharchilava,Y N Kharzheev, I Kiselevich, J M Kohli,A V Kozelov, J Kraus,S Kulikov,Ashok Kumar, A Kupco, T Kurca,V A Kuzmin,S Lammers,G Landsberg, P Lebrun,H S Lee,S W Lee,W M Lee,X Lei,J Lellouch, Houjie Li,Lin Li,Q Z Li,J K Lim,D Lincoln,J Linnemann, V V Lipaev, R Lipton, Huanglingzi Liu,Yi Liu, A Lobodenko,M Lokajicek,R Lopes De Sa, H J Lubatti,R Lunagarcia,A L Lyon, A K A Maciel,R Madar, R Maganavillalba,S Malik, V L Malyshev, Y Maravin, J Martinezortega,R Mccarthy,C L Mcgivern,M M Meijer, A Melnitchouk,D Menezes, P G Mercadante,M Merkin, A Meyer,J Meyer,F Miconi,N K Mondal, M Mulhearn,E Nagy,M Naimuddin,M Narain,R Nayyar, H A Neal,J P Negret,P Neustroev, T Nunnemann,D Orbaker,J Orduna,N Osman,J Osta, M Padilla, Amit Pal, N Parashar,V Parihar, S K Park,R Partridge,N Parua, A Patwa, B Penning, M Perfilov,Y Peters, K Petridis, G Petrillo,P Petroff, M A Pleier,P L M Podestalerma,V M Podstavkov,A V Popov, M Prewitt,D Price,N Prokopenko,Jun Qian, A Quadt,B Quinn, M S Rangel, K Ranjan, P N Ratoff,I Razumov, P Renkel,I Rippbaudot, F Rizatdinova,M Rominsky,Ashley J Ross, C Royon, P Rubinov, R Ruchti, G Sajot,P Salcido,A Sanchezhernandez, M P Sanders,A S Santos,G Savage, L Sawyer,T Scanlon, R D Schamberger,Y Scheglov,H Schellman,S Schlobohm, C Schwanenberger,R Schwienhorst,J Sekaric, H Severini,E Shabalina,V Shary,S Shaw,A A Shchukin, R K Shivpuri, V Simak, P Skubic,P Slattery,D Smirnov,K J Smith, G R Snow, J Snow,Scott A Snyder, S Soeldnerrembold, L Sonnenschein,K Soustruznik,J Stark,D A Stoyanova, M Strauss,L Suter,P Svoisky, Mei Takahashi,M Titov,V V Tokmenin,Y T Tsai,K Tschanngrimm, D Tsybychev,B Tuchming,C Tully, L Uvarov,S Uvarov,S Uzunyan,R Van Kooten,W M Van Leeuwen, N Varelas, E W Varnes,I A Vasilyev,P Verdier,A Y Verkheev,L S Vertogradov,M Verzocchi,M Vesterinen, D Vilanova, P Vokac,H D Wahl,M H L S Wang, J Warchol, G Watts, M Wayne,J Weichert,L Weltyrieger, A White, D Wicke,M R J Williams,G W Wilson,M Wobisch, D R Wood, T R Wyatt,Yuehong Xie,Ryohei Yamada, Showlin Yang,W C Yang,T Yasuda,Y A Yatsunenko,W Ye,Zheng Ye,H Yin,K Yip,S W Youn,J M Yu,J Zennamo, T G Zhao,Bo Zhou,Junming Zhu, M Zielinski, D Zieminska,L Zivkovic

PHYSICAL REVIEW D（2013）

引用 58|浏览180

暂无评分

摘要

We present measurements of lepton (l) angular distributions in top-quark (t) pair production and t (t) over bar -> W(+)bW-(b) over bar -> l(+) vbl-(v) over bar(b) over bar decays produced in p (p) over bar collisions at a center-of-mass energy of root s = 1.96 TeV, where l is an electron or muon. Using data corresponding to an integrated luminosity of 5.4 fb(-1), collected with the D0 detector at the Fermilab Tevatron Collider, we measure for the first time the leptonic forward-backward asymmetry in dilepton final states and obtain A(FB)(l) = (5.8 +/- 5.1(stat) +/- 1.3(syst))%, corrected for detector acceptance. This is compared to the standard model prediction of A(FB)(l)(predicted) = (4.7 +/- 0.1)%. A deviation from the standard model prediction as previously seen in a D0 measurement based on the analysis of the l + jets final state is not observed in these dilepton final states. The two results differ from each other by 1.4 standard deviations and are combined to obtain A(FB)(l) = (11.8 +/- 3.2)%. Furthermore, we present a first study of the top-quark polarization. DOI: 10.1103/PhysRevD.87.011103

查看译文

关键词

natural sciences

AI 理解论文

溯源树

样例

生成溯源树，研究论文发展脉络

Chat Paper

正在生成论文摘要