Phys. Rev. Lett.
82,
4975–4980
(1999)
Search for Charged Higgs Bosons in Decays of Top Quark Pairs
B. Abbott et al. (D0 Collaboration)
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B. Abbott40, M. Abolins37, V. Abramov15, B. S. Acharya8, I. Adam39, D. L. Adams49, M. Adams24, S. Ahn23, G. A. Alves2, N. Amos36, E. W. Anderson30, M. M. Baarmand42, V. V. Babintsev15, L. Babukhadia16, A. Baden33, B. Baldin23, S. Banerjee8, J. Bantly46, 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, G. Briskin46, R. Brock37, A. Bross23, D. Buchholz26, V. S. Burtovoi15, J. M. Butler34, W. Carvalho2, D. Casey37, Z. Casilum42, H. Castilla-Valdez11, D. Chakraborty42, S. V. Chekulaev15, W. Chen42, S. Choi10, S. Chopra21, B. C. Choudhary20, J. H. Christenson23, M. Chung24, D. Claes38, A. R. Clark17, W. G. Cobau33, J. Cochran20, L. Coney28, W. E. Cooper23, D. Coppage31, C. Cretsinger41, D. Cullen-Vidal46, M. A. C. Cummings25, D. Cutts46, O. I. Dahl17, K. Davis16, K. De47, K. Del Signore36, M. Demarteau23, D. Denisov23, S. P. Denisov15, H. T. Diehl23, M. Diesburg23, G. Di Loreto37, P. Draper47, Y. Ducros5, L. V. Dudko14, S. R. Dugad8, A. Dyshkant15, D. Edmunds37, J. Ellison20, V. D. Elvira42, R. Engelmann42, S. Eno33, G. Eppley49, P. Ermolov14, O. V. Eroshin15, V. N. Evdokimov15, T. Fahland19, M. K. Fatyga41, S. Feher23, D. Fein16, T. Ferbel41, H. E. Fisk23, Y. Fisyak43, E. Flattum23, G. E. Forden16, M. Fortner25, K. C. Frame37, S. Fuess23, E. Gallas47, 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. Goss48, K. Gounder20, A. Goussiou42, N. Graf43, P. D. Grannis42, D. R. Green23, H. Greenlee23, S. Grinstein1, P. Grudberg17, S. Grünendahl23, G. Guglielmo45, J. A. Guida16, J. M. Guida46, A. Gupta8, S. N. Gurzhiev15, G. Gutierrez23, P. Gutierrez45, N. J. Hadley33, H. Haggerty23, S. Hagopian21, V. Hagopian21, K. S. Hahn41, R. E. Hall19, P. Hanlet35, S. Hansen23, J. M. Hauptman30, C. Hebert31, D. Hedin25, A. P. Heinson20, U. Heintz34, R. Hernández-Montoya11, T. Heuring21, R. Hirosky24, J. D. Hobbs42, B. Hoeneisen4,*, J. S. Hoftun46, F. Hsieh36, Tong Hu27, A. S. Ito23, 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. Kalbfleisch45, D. Karmanov14, D. Karmgard21, R. Kehoe28, 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, Y. Kulik42, S. Kunori33, F. Landry37, G. Landsberg46, B. Lauer30, A. Leflat14, J. Li47, Q. Z. Li23, J. G. R. Lima3, D. Lincoln23, S. L. Linn21, J. Linnemann37, R. Lipton23, F. Lobkowicz41, 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. Miao46, H. Miettinen49, 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. Narain34, V. S. Narasimham8, A. Narayanan16, H. A. Neal36, J. P. Negret4, P. Nemethy40, D. Norman48, L. Oesch36, V. Oguri3, N. Oshima23, D. Owen37, P. Padley49, A. Para23, N. Parashar35, Y. M. Park9, R. Partridge46, N. Parua8, M. Paterno41, B. Pawlik12, J. Perkins47, 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, D. Shpakov42, M. Shupe16, H. Singh20, J. B. Singh6, V. Sirotenko25, E. Smith45, R. P. Smith23, R. Snihur26, G. R. Snow38, J. Snow44, S. Snyder43, J. Solomon24, M. Sosebee47, N. Sotnikova14, M. Souza2, G. Steinbrück45, R. W. Stephens47, M. L. Stevenson17, F. Stichelbaut43, D. Stoker19, V. Stolin13, D. A. Stoyanova15, M. Strauss45, 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, A. A. Volkov15, A. P. Vorobiev15, H. D. Wahl21, G. Wang21, J. Warchol28, G. Watts46, M. Wayne28, H. Weerts37, A. White47, J. T. White48, J. A. Wightman30, S. Willis25, S. J. Wimpenny20, J. V. D. Wirjawan48, J. Womersley23, E. Won41, D. R. Wood35, Z. Wu23,‡, R. Yamada23, P. Yamin43, T. Yasuda35, P. Yepes49, K. Yip23, C. Yoshikawa22, S. Youssef21, J. Yu23, Y. Yu10, B. Zhang23,§, Z. Zhou30, Z. H. Zhu41, M. Zielinski41, D. Zieminska27, A. Zieminski27, E. G. Zverev14, and A. Zylberstejn5 (D0 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
44Langston University, Langston, Oklahoma 73050
45University of Oklahoma, Norman, Oklahoma 73019
46Brown University, Providence, Rhode Island 02912
47University of Texas, Arlington, Texas 76019
48Texas A&M University, College Station, Texas 77843
49Rice University, Houston, Texas 77005
Received 22 February 1999; published in the issue dated 21 June 1999
We present a search for charged Higgs bosons in decays of pair-produced top quarks using 109.2±5.8pb-1 of data recorded from pp̅ collisions at √s = 1.8TeV by the D0 detector during 1992–1996 at the Fermilab Tevatron. No evidence is found for charged Higgs production, and most parts of the [MH+,tanβ] parameter space where the decay t→H+b has a branching fraction close to or larger than that for t→W+b are excluded at 95% confidence level. Assuming mt = 175GeV and σ(pp̅ →tt̅ ) = 5.5pb, for MH+ = 60GeV, we exclude tanβ<0.97 and tanβ>40.9.
© 1999 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.4975
DOI:
10.1103/PhysRevLett.82.4975
PACS:
14.80.Cp, 13.85.Rm, 14.65.Ha
*Visitor from Universidad San Francisco de Quito, Quito, Ecuador. †Visitor from IHEP, Beijing, China. ‡ §
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