Phys. Rev. D
60,
052001
(1999)
[21 pages]
Measurement of the top quark mass in the dilepton channel
B. Abbott et al. (DØ Collaboration)
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B. Abbott40, M. Abolins37, V. Abramov15, B. S. Acharya8, I. Adam39, D. L. Adams48, M. Adams24, S. Ahn23, H. Aihara17, G. A. Alves2, N. Amos36, E. W. Anderson30, R. Astur42, M. M. Baarmand42, V. V. Babintsev15, L. Babukhadia16, A. Baden33, V. Balamurali28, B. Baldin23, S. Banerjee8, J. Bantly45, E. Barberis17, P. Baringer31, J. F. Bartlett23, A. Belyaev14, S. B. Beri6, I. Bertram26, V. A. Bezzubov15, P. C. Bhat23, V. Bhatnagar6, M. Bhattacharjee42, N. Biswas28, G. Blazey25, S. Blessing21, P. Bloom18, A. Boehnlein23, N. I. Bojko15, F. Borcherding23, C. Boswell20, A. Brandt23, R. Breedon18, R. Brock37, A. Bross23, D. Buchholz26, V. S. Burtovoi15, J. M. Butler34, W. Carvalho2, D. Casey37, Z. Casilum42, H. Castilla-Valdez11, D. Chakraborty42, S.-M. Chang35, S. V. Chekulaev15, L.-P. Chen17, W. Chen42, S. Choi10, S. Chopra36, B. C. Choudhary20, J. H. Christenson23, M. Chung24, D. Claes38, A. R. Clark17, W. G. Cobau33, J. Cochran20, L. Coney28, W. E. Cooper23, C. Cretsinger41, D. Cullen-Vidal45, M. A. C. Cummings25, D. Cutts45, O. I. Dahl17, K. Davis16, K. De46, K. Del Signore36, M. Demarteau23, D. Denisov23, S. P. Denisov15, H. T. Diehl23, M. Diesburg23, G. Di Loreto37, P. Draper46, Y. Ducros5, L. V. Dudko14, S. R. Dugad8, A. Dyshkant15, D. Edmunds37, J. Ellison20, V. D. Elvira42, R. Engelmann42, S. Eno33, G. Eppley48, P. Ermolov14, O. V. Eroshin15, V. N. Evdokimov15, T. Fahland19, M. K. Fatyga41, S. Feher23, D. Fein16, T. Ferbel41, G. Finocchiaro42, H. E. Fisk23, Y. Fisyak43, E. Flattum23, G. E. Forden16, M. Fortner25, K. C. Frame37, S. Fuess23, E. Gallas46, A. N. Galyaev15, P. Gartung20, V. Gavrilov13, T. L. Geld37, R. J. Genik, II37, K. Genser23, C. E. Gerber23, Y. Gershtein13, B. Gibbard43, B. Gobbi26, B. Gómez4, G. Gómez33, P. I. Goncharov15, J. L. González Solís11, H. Gordon43, L. T. Goss47, K. Gounder20, A. Goussiou42, N. Graf43, P. D. Grannis42, D. R. Green23, H. Greenlee23, S. Grinstein1, P. Grudberg17, S. Grünendahl23, G. Guglielmo44, J. A. Guida16, J. M. Guida45, A. Gupta8, S. N. Gurzhiev15, G. Gutierrez23, P. Gutierrez44, N. J. Hadley33, H. Haggerty23, S. Hagopian21, V. Hagopian21, K. S. Hahn41, R. E. Hall19, P. Hanlet35, S. Hansen23, J. M. Hauptman30, D. Hedin25, A. P. Heinson20, U. Heintz23, R. Hernández-Montoya11, T. Heuring21, R. Hirosky24, J. D. Hobbs42, B. Hoeneisen4, J. S. Hoftun45, F. Hsieh36, Ting Hu42, Tong Hu27, T. Huehn20, A. S. Ito23, E. James16, J. Jaques28, S. A. Jerger37, R. Jesik27, T. Joffe-Minor26, K. Johns16, M. Johnson23, A. Jonckheere23, M. Jones22, H. Jöstlein23, S. Y. Jun26, C. K. Jung42, S. Kahn43, G. Kalbfleisch44, D. Karmanov14, D. Karmgard21, R. Kehoe28, M. L. Kelly28, S. K. Kim10, B. Klima23, C. Klopfenstein18, W. Ko18, J. M. Kohli6, D. Koltick29, A. V. Kostritskiy15, J. Kotcher43, A. V. Kotwal39, A. V. Kozelov15, E. A. Kozlovsky15, J. Krane38, M. R. Krishnaswamy8, S. Krzywdzinski23, S. Kuleshov13, S. Kunori33, F. Landry37, G. Landsberg45, B. Lauer30, A. Leflat14, J. Li46, Q. Z. Li-Demarteau23, J. G. R. Lima3, D. Lincoln23, S. L. Linn21, J. Linnemann37, R. Lipton23, F. Lobkowicz41, S. C. Loken17, A. Lucotte42, L. Lueking23, A. L. Lyon33, A. K. A. Maciel2, R. J. Madaras17, R. Madden21, L. Magaña-Mendoza11, V. Manankov14, S. Mani18, H. S. Mao23, R. Markeloff25, T. Marshall27, M. I. Martin23, K. M. Mauritz30, B. May26, A. A. Mayorov15, R. McCarthy42, J. McDonald21, T. McKibben24, J. McKinley37, T. McMahon44, H. L. Melanson23, M. Merkin14, K. W. Merritt23, C. Miao45, H. Miettinen48, A. Mincer40, C. S. Mishra23, N. Mokhov23, N. K. Mondal8, H. E. Montgomery23, P. Mooney4, M. Mostafa1, H. da Motta2, C. Murphy24, F. Nang16, M. Narain23, V. S. Narasimham8, A. Narayanan16, H. A. Neal36, J. P. Negret4, P. Nemethy40, D. Norman47, L. Oesch36, V. Oguri3, E. Oliveira2, E. Oltman17, N. Oshima23, D. Owen37, P. Padley48, A. Para23, Y. M. Park9, R. Partridge45, N. Parua8, M. Paterno41, B. Pawlik12, J. Perkins46, M. Peters22, R. Piegaia1, H. Piekarz21, Y. Pischalnikov29, B. G. Pope37, H. B. Prosper21, S. Protopopescu43, J. Qian36, P. Z. Quintas23, R. Raja23, S. Rajagopalan43, O. Ramirez24, S. Reucroft35, M. Rijssenbeek42, T. Rockwell37, M. Roco23, P. Rubinov26, R. Ruchti28, J. Rutherfoord16, A. Sánchez-Hernández11, A. Santoro2, L. Sawyer32, R. D. Schamberger42, H. Schellman26, J. Sculli40, E. Shabalina14, C. Shaffer21, H. C. Shankar8, R. K. Shivpuri7, M. Shupe16, H. Singh20, J. B. Singh6, V. Sirotenko25, E. Smith44, R. P. Smith23, R. Snihur26, G. R. Snow38, J. Snow44, S. Snyder43, J. Solomon24, M. Sosebee46, N. Sotnikova14, M. Souza2, A. L. Spadafora17, G. Steinbrück44, R. W. Stephens46, M. L. Stevenson17, D. Stewart36, F. Stichelbaut42, D. Stoker19, V. Stolin13, D. A. Stoyanova15, M. Strauss44, K. Streets40, M. Strovink17, A. Sznajder2, P. Tamburello33, J. Tarazi19, M. Tartaglia23, T. L. T. Thomas26, J. Thompson33, T. G. Trippe17, P. M. Tuts39, V. Vaniev15, N. Varelas24, E. W. Varnes17, D. Vititoe16, A. A. Volkov15, A. P. Vorobiev15, H. D. Wahl21, G. Wang21, J. Warchol28, G. Watts45, M. Wayne28, H. Weerts37, A. White46, J. T. White47, J. A. Wightman30, S. Willis25, S. J. Wimpenny20, J. V. D. Wirjawan47, J. Womersley23, E. Won41, D. R. Wood35, Z. Wu23, H. Xu45, R. Yamada23, P. Yamin43, T. Yasuda35, P. Yepes48, K. Yip23, C. Yoshikawa22, S. Youssef21, J. Yu23, Y. Yu10, B. Zhang23, Y. Zhou23, Z. Zhou30, Z. H. Zhu41, M. Zielinski41, D. Zieminska27, A. Zieminski27, E. G. Zverev14, and A. Zylberstejn5 (DØ Collaboration)
1Universidad de Buenos Aires, Buenos Aires, Argentina
2LAFEX, Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, Brazil
3Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
4Universidad de los Andes, Bogotá, Colombia
5DAPNIA/Service de Physique des Particules, CEA, Saclay, France
6Panjab University, Chandigarh, India
7Delhi University, Delhi, India
8Tata Institute of Fundamental Research, Mumbai, India
9Kyungsung University, Pusan, Korea
10Seoul National University, Seoul, Korea
11CINVESTAV, Mexico City, Mexico
12Institute of Nuclear Physics, Kraków, Poland
13Institute for Theoretical and Experimental Physics, Moscow, Russia
14Moscow State University, Moscow, Russia
15Institute for High Energy Physics, Protvino, Russia
16University of Arizona, Tucson, Arizona 85721
17Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720
18University of California, Davis, California 95616
19University of California, Irvine, California 92697
20University of California, Riverside, California 92521
21Florida State University, Tallahassee, Florida 32306
22University of Hawaii, Honolulu, Hawaii 96822
23Fermi National Accelerator Laboratory, Batavia, Illinois 60510
24University of Illinois at Chicago, Chicago, Illinois 60607
25Northern Illinois University, DeKalb, Illinois 60115
26Northwestern University, Evanston, Illinois 60208
27Indiana University, Bloomington, Indiana 47405
28University of Notre Dame, Notre Dame, Indiana 46556
29Purdue University, West Lafayette, Indiana 47907
30Iowa State University, Ames, Iowa 50011
31University of Kansas, Lawrence, Kansas 66045
32Louisiana Tech University, Ruston, Louisiana 71272
33University of Maryland, College Park, Maryland 20742
34Boston University, Boston, Massachusetts 02215
35Northeastern University, Boston, Massachusetts 02115
36University of Michigan, Ann Arbor, Michigan 48109
37Michigan State University, East Lansing, Michigan 48824
38University of Nebraska, Lincoln, Nebraska 68588
39Columbia University, New York, New York 10027
40New York University, New York, New York 10003
41University of Rochester, Rochester, New York 14627
42State University of New York, Stony Brook, New York 11794
43Brookhaven National Laboratory, Upton, New York 11973
44University of Oklahoma, Norman, Oklahoma 73019
45Brown University, Providence, Rhode Island 02912
46University of Texas, Arlington, Texas 76019
47Texas A&M University, College Station, Texas 77843
48Rice University, Houston, Texas 77005
Received 27 August 1998; published 14 July 1999
We report a measurement of the top quark mass using six candidate events for the process pp̅ →tt̅ +X⃗l+νbl-ν̅ b̅ +X, observed in the D0 experiment at the Fermilab pp̅ collider. Using maximum likelihood fits to the dynamics of the decays, we measure a mass for the top quark of mt=168.4±12.3(stat)±3.6(syst) Gev. We combine this result with our previous measurement in the tt̅ →l+jets channel to obtain mt=172.1±7.1 GeV as the best value of the mass of the top quark measured by D0.
© 1999 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.60.052001
DOI:
10.1103/PhysRevD.60.052001
PACS:
14.65.Ha, 13.85.Ni, 13.85.Qk
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