Phys. Rev. D
71,
072004
(2005)
[7 pages]
Measurement of σ(pp̅ →Z)·Br(Z→ττ) at √s=1.96 TeV
V. M. Abazov et al. D0 Collaboration
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V. M. Abazov1, B. Abbott3, M. Abolins4, B. S. Acharya5, M. Adams6, T. Adams7, M. Agelou8, J.-L. Agram9, S. H. Ahn10, M. Ahsan11, G. D. Alexeev1, G. Alkhazov12, A. Alton13, G. Alverson14, G. A. Alves15, M. Anastasoaie16, T. Andeen17, S. Anderson18, B. Andrieu19, Y. Arnoud20, A. Askew21, B. Åsman22, O. Atramentov23, C. Autermann24, C. Avila25, F. Badaud26, A. Baden27, B. Baldin28, P. W. Balm29, S. Banerjee5, E. Barberis14, P. Bargassa21, P. Baringer30, C. Barnes31, J. Barreto15, J. F. Bartlett28, U. Bassler19, D. Bauer32, A. Bean30, S. Beauceron19, M. Begel33, A. Bellavance34, S. B. Beri35, G. Bernardi19, I. Bertram36, M. Besançon8, R. Beuselinck31, V. A. Bezzubov37, P. C. Bhat28, V. Bhatnagar35, M. Binder38, C. Biscarat36, K. M. Black39, I. Blackler31, G. Blazey40, F. Blekman29, S. Blessing7, D. Bloch9, U. Blumenschein41, A. Boehnlein28, O. Boeriu42, T. A. Bolton11, F. Borcherding28, G. Borissov36, K. Bos29, T. Bose43, A. Brandt44, R. Brock4, G. Brooijmans43, A. Bross28, N. J. Buchanan7, D. Buchholz17, M. Buehler6, V. Buescher41, S. Burdin28, T. H. Burnett45, E. Busato19, J. M. Butler39, J. Bystricky8, W. Carvalho46, B. C. K. Casey47, N. M. Cason42, H. Castilla-Valdez48, S. Chakrabarti5, D. Chakraborty40, K. M. Chan33, A. Chandra5, D. Chapin47, F. Charles9, E. Cheu18, L. Chevalier8, D. K. Cho33, S. Choi49, B. Choudhary50, T. Christiansen38, L. Christofek30, D. Claes34, B. Clément9, C. Clément22, Y. Coadou51, M. Cooke21, W. E. Cooper28, D. Coppage30, M. Corcoran21, A. Cothenet52, M.-C. Cousinou52, B. Cox53, S. Crépé-Renaudin20, M. Cristetiu49, D. Cutts47, H. da Motta15, B. Davies36, G. Davies31, G. A. Davis17, K. De44, P. de Jong29, S. J. de Jong16, E. De La Cruz-Burelo48, C. De Oliveira Martins46, S. Dean53, F. Déliot8, M. Demarteau28, R. Demina33, P. Demine8, D. Denisov28, S. P. Denisov37, S. Desai54, H. T. Diehl28, M. Diesburg28, M. Doidge36, H. Dong54, S. Doulas14, L. V. Dudko55, L. Duflot56, S. R. Dugad5, A. Duperrin52, J. Dyer4, A. Dyshkant40, M. Eads40, D. Edmunds4, T. Edwards53, J. Ellison49, J. Elmsheuser38, J. T. Eltzroth44, V. D. Elvira28, S. Eno27, P. Ermolov55, O. V. Eroshin37, J. Estrada28, D. Evans31, H. Evans43, A. Evdokimov57, V. N. Evdokimov37, J. Fast28, S. N. Fatakia39, L. Feligioni39, T. Ferbel33, F. Fiedler38, F. Filthaut16, W. Fisher58, H. E. Fisk28, M. Fortner40, H. Fox41, W. Freeman28, S. Fu28, S. Fuess28, T. Gadfort45, C. F. Galea16, E. Gallas28, E. Galyaev42, C. Garcia33, A. Garcia-Bellido45, J. Gardner30, V. Gavrilov57, P. Gay26, D. Gelé9, R. Gelhaus49, K. Genser28, C. E. Gerber6, Y. Gershtein47, G. Ginther33, T. Golling59, B. Gómez25, K. Gounder28, A. Goussiou42, P. D. Grannis54, S. Greder9, H. Greenlee28, Z. D. Greenwood60, E. M. Gregores61, Ph. Gris26, J.-F. Grivaz56, L. Groer43, S. Grünendahl28, M. W. Grünewald62, S. N. Gurzhiev37, G. Gutierrez28, P. Gutierrez3, A. Haas43, N. J. Hadley27, S. Hagopian7, I. Hall3, R. E. Hall63, C. Han13, L. Han53, K. Hanagaki28, K. Harder11, R. Harrington14, J. M. Hauptman23, R. Hauser4, J. Hays17, T. Hebbeker24, D. Hedin40, J. M. Heinmiller6, A. P. Heinson49, U. Heintz39, C. Hensel30, G. Hesketh14, M. D. Hildreth42, R. Hirosky64, J. D. Hobbs54, B. Hoeneisen65, M. Hohlfeld66, S. J. Hong10, R. Hooper47, P. Houben29, Y. Hu54, J. Huang32, I. Iashvili49, R. Illingworth28, A. S. Ito28, S. Jabeen30, M. Jaffré56, S. Jain3, V. Jain67, K. Jakobs41, A. Jenkins31, R. Jesik31, K. Johns18, M. Johnson28, A. Jonckheere28, P. Jonsson31, H. Jöstlein28, A. Juste28, D. Käfer24, W. Kahl11, S. Kahn67, E. Kajfasz52, A. M. Kalinin1, J. Kalk4, D. Karmanov55, J. Kasper39, D. Kau7, R. Kaur35, R. Kehoe68, S. Kermiche52, S. Kesisoglou47, A. Khanov33, A. Kharchilava42, Y. M. Kharzheev1, K. H. Kim10, B. Klima28, M. Klute59, J. M. Kohli35, M. Kopal3, V. M. Korablev37, J. Kotcher67, B. Kothari43, A. Koubarovsky55, A. V. Kozelov37, J. Kozminski4, S. Krzywdzinski28, S. Kuleshov57, Y. Kulik28, A. Kumar50, S. Kunori27, A. Kupco69, T. Kurča70, S. Lager22, N. Lahrichi8, G. Landsberg47, J. Lazoflores7, A.-C. Le Bihan9, P. Lebrun70, S. W. Lee10, W. M. Lee7, A. Leflat55, F. Lehner27,*, C. Leonidopoulos43, P. Lewis31, J. Li44, Q. Z. Li28, J. G. R. Lima40, D. Lincoln28, S. L. Linn7, J. Linnemann4, V. V. Lipaev37, R. Lipton28, L. Lobo31, A. Lobodenko12, M. Lokajicek69, A. Lounis9, H. J. Lubatti45, L. Lueking28, M. Lynker42, A. L. Lyon28, A. K. A. Maciel40, R. J. Madaras71, P. Mättig72, A. Magerkurth13, A.-M. Magnan20, N. Makovec56, P. K. Mal5, S. Malik60, V. L. Malyshev1, H. S. Mao73, Y. Maravin28, M. Martens28, S. E. K. Mattingly47, A. A. Mayorov37, R. McCarthy54, R. McCroskey18, D. Meder66, H. L. Melanson28, A. Melnitchouk74, A. Mendes52, M. Merkin55, K. W. Merritt28, A. Meyer24, M. Michaut8, H. Miettinen21, J. Mitrevski43, N. Mokhov28, J. Molina46, N. K. Mondal5, R. W. Moore51, G. S. Muanza70, M. Mulders28, Y. D. Mutaf54, E. Nagy52, M. Narain39, N. A. Naumann16, H. A. Neal13, J. P. Negret25, S. Nelson7, P. Neustroev12, C. Noeding41, A. Nomerotski28, S. F. Novaes61, T. Nunnemann38, E. Nurse53, V. O’Dell28, D. C. O’Neil51, V. Oguri46, N. Oliveira46, N. Oshima28, G. J. Otero y Garzón6, P. Padley21, N. Parashar60, J. Park10, S. K. Park10, J. Parsons43, R. Partridge47, N. Parua54, A. Patwa67, P. M. Perea49, E. Perez8, P. Pétroff56, M. Petteni31, L. Phaf29, R. Piegaia75, M.-A. Pleier33, P. L. M. Podesta-Lerma48, V. M. Podstavkov28, Y. Pogorelov42, B. G. Pope4, W. L. Prado da Silva46, H. B. Prosper7, S. Protopopescu67, J. Qian13, A. Quadt59, B. Quinn74, K. J. Rani5, K. Ranjan50, P. A. Rapidis28, P. N. Ratoff36, N. W. Reay11, S. Reucroft14, M. Rijssenbeek54, I. Ripp-Baudot9, F. Rizatdinova11, C. Royon8, P. Rubinov28, R. Ruchti42, V. I. Rud55, G. Sajot20, A. Sánchez-Hernández48, M. P. Sanders53, A. Santoro46, G. Savage28, L. Sawyer60, T. Scanlon31, D. Schaile38, R. D. Schamberger54, H. Schellman17, P. Schieferdecker38, C. Schmitt72, A. A. Schukin37, A. Schwartzman58, R. Schwienhorst4, S. Sengupta7, H. Severini3, E. Shabalina6, M. Shamim11, V. Shary8, W. D. Shephard42, R. K. Shivpuri50, D. Shpakov14, R. A. Sidwell11, V. Simak76, V. Sirotenko28, P. Skubic3, P. Slattery33, R. P. Smith28, K. Smolek76, G. R. Snow34, J. Snow77, S. Snyder67, S. Söldner-Rembold53, X. Song40, Y. Song44, L. Sonnenschein39, A. Sopczak36, M. Sosebee44, K. Soustruznik78, M. Souza15, B. Spurlock44, N. R. Stanton11, J. Stark20, J. Steele60, G. Steinbrück43, K. Stevenson32, V. Stolin57, A. Stone6, D. A. Stoyanova37, J. Strandberg22, M. A. Strang44, M. Strauss3, R. Ströhmer38, D. Strom17, M. Strovink71, L. Stutte28, S. Sumowidagdo7, A. Sznajder46, M. Talby52, P. Tamburello18, W. Taylor51, P. Telford53, J. Temple18, E. Thomas52, B. Thooris8, M. Tomoto28, T. Toole27, J. Torborg42, S. Towers54, T. Trefzger66, S. Trincaz-Duvoid19, B. Tuchming8, C. Tully58, A. S. Turcot67, P. M. Tuts43, L. Uvarov12, S. Uvarov12, S. Uzunyan40, B. Vachon51, R. Van Kooten32, W. M. van Leeuwen29, N. Varelas6, E. W. Varnes18, I. A. Vasilyev37, M. Vaupel72, P. Verdier56, L. S. Vertogradov1, M. Verzocchi27, F. Villeneuve-Seguier31, J.-R. Vlimant19, E. Von Toerne11, M. Vreeswijk29, T. Vu Anh56, H. D. Wahl7, R. Walker31, L. Wang27, Z.-M. Wang54, J. Warchol42, M. Warsinsky59, G. Watts45, M. Wayne42, M. Weber28, H. Weerts4, M. Wegner24, N. Wermes59, A. White44, V. White28, D. Whiteson71, D. Wicke28, D. A. Wijngaarden16, G. W. Wilson30, S. J. Wimpenny49, J. Wittlin39, M. Wobisch28, J. Womersley28, D. R. Wood14, T. R. Wyatt53, Q. Xu13, N. Xuan42, S. Yacoob17, R. Yamada28, M. Yan27, T. Yasuda28, Y. A. Yatsunenko1, Y. Yen72, K. Yip67, S. W. Youn17, J. Yu44, A. Yurkewicz54, A. Zabi56, A. Zatserklyaniy40, M. Zdrazil54, C. Zeitnitz66, D. Zhang28, X. Zhang3, T. Zhao45, Z. Zhao13, B. Zhou13, J. Zhu27, M. Zielinski33, D. Zieminska32, A. Zieminski32, R. Zitoun54, V. Zutshi40, E. G. Zverev55, and A. Zylberstejn8 (D0 Collaboration)
1Joint Institute for Nuclear Research, Dubna, Russia
3University of Oklahoma, Norman, Oklahoma 73019, USA
4Michigan State University, East Lansing, Michigan 48824, USA
5Tata Institute of Fundamental Research, Mumbai, India
6University of Illinois at Chicago, Chicago, Illinois 60607, USA
7Florida State University, Tallahassee, Florida 32306, USA
8DAPNIA/Service de Physique des Particules, CEA, Saclay, France
9IReS, IN2P3-CNRS, Université Louis Pasteur, Strasbourg, France, and Université de Haute Alsace, Mulhouse, France
10Korea Detector Laboratory, Korea University, Seoul, Korea
11Kansas State University, Manhattan, Kansas 66506, USA
12Petersburg Nuclear Physics Institute, St. Petersburg, Russia
13University of Michigan, Ann Arbor, Michigan 48109, USA
14Northeastern University, Boston, Massachusetts 02115, USA
15LAFEX, Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, Brazil
16University of Nijmegen/NIKHEF, Nijmegen, The Netherlands
17Northwestern University, Evanston, Illinois 60208, USA
18University of Arizona, Tucson, Arizona 85721, USA
19LPNHE, IN2P3-CNRS, Universités Paris VI and VII, Paris, France
20Laboratoire de Physique Subatomique et de Cosmologie, IN2P3-CNRS, Universite de Grenoble 1, Grenoble, France
21Rice University, Houston, Texas 77005, USA
22Lund University, Lund, Sweden, Royal Institute of Technology and Stockholm University, Stockholm, Sweden, and Uppsala University, Uppsala, Sweden
23Iowa State University, Ames, Iowa 50011, USA
24III. Physikalisches Institut A, RWTH Aachen, Aachen, Germany
25Universidad de los Andes, Bogotá, Colombia
26Laboratoire de Physique Corpusculaire, IN2P3-CNRS, Université Blaise Pascal, Clermont-Ferrand, France
27University of Maryland, College Park, Maryland 20742, USA
28Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
29FOM-Institute NIKHEF and University of Amsterdam/NIKHEF, Amsterdam, The Netherland
30University of Kansas, Lawrence, Kansas 66045, USA
31Imperial College, London, United Kingdom
32Indiana University, Bloomington, Indiana 47405, USA
33University of Rochester, Rochester, New York 14627, USA
34University of Nebraska, Lincoln, Nebraska 68588, USA
35Panjab University, Chandigarh, India
36Lancaster University, Lancaster, United Kingdom
37Institute for High Energy Physics, Protvino, Russia
38Ludwig-Maximilians-Universität München, München, Germany
39Boston University, Boston, Massachusetts 02215, USA
40Northern Illinois University, DeKalb, Illinois 60115, USA
41Physikalisches Institut, Universität Freiburg, Freiburg, Germany
42University of Notre Dame, Notre Dame, Indiana 46556, USA
43Columbia University, New York, New York 10027, USA
44University of Texas, Arlington, Texas 76019, USA
45University of Washington, Seattle, Washington 98195, USA
46Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
47Brown University, Providence, Rhode Island 02912, USA
48CINVESTAV, Mexico City, Mexico
49University of California, Riverside, California 92521, USA
50Delhi University, Delhi, India
51University of Alberta, Edmonton, Alberta, Canada, Simon Fraser University, Burnaby, British Columbia, Canada, York University, Toronto, Ontario, Canada, and McGill University, Montreal, Quebec, Canada
52CPPM, IN2P3-CNRS, Université de la Méditerranée, Marseille, France
53University of Manchester, Manchester, United Kingdom
54State University of New York, Stony Brook, New York 11794, USA
55Moscow State University, Moscow, Russia
56Laboratoire de l’Accélérateur Linéaire, IN2P3-CNRS, Orsay, France
57Institute for Theoretical and Experimental Physics, Moscow, Russia
58Princeton University, Princeton, New Jersey 08544, USA
59Physikalisches Institut, Universität Bonn, Bonn, Germany
60Louisiana Tech University, Ruston, Louisiana 71272, USA
61Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo, Brazil
62University College Dublin, Dublin, Ireland
63California State University, Fresno, California 93740, USA
64University of Virginia, Charlottesville, Virginia 22901, USA
65Universidad San Francisco de Quito, Quito, Ecuador
66Institut für Physik, Universität Mainz, Mainz, Germany
67Brookhaven National Laboratory, Upton, New York 11973, USA
68Southern Methodist University, Dallas, Texas 75275, USA
69Institute of Physics, Academy of Sciences, Center for Particle Physics, Prague, Czech Republic
70Institut de Physique Nucléaire de Lyon, IN2P3-CNRS, Université Claude Bernard, Villeurbanne, France
71Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720, USA
72Fachbereich Physik, University of Wuppertal, Wuppertal, Germany
73Institute of High Energy Physics, Beijing, People’s Republic of China
74University of Mississippi, University, Mississippi 38677, USA
75Universidad de Buenos Aires, Buenos Aires, Argentina
76Czech Technical University, Prague, Czech Republic
77Langston University, Langston, Oklahoma 73050, USA
78Center for Particle Physics, Charles University, Prague, Czech Republic
See Also:
Erratum
Received 7 December 2004; published 11 April 2005
We present a measurement of the cross section for Z production times the branching fraction to τ leptons, σ·Br(Z→τ+τ-), in pp̅ collisions at √s=1.96 TeV in the channel in which one τ decays into μνμντ, and the other into hadrons+ντ or eνeντ. The data sample corresponds to an integrated luminosity of 226 pb-1 collected with the D0 detector at the Fermilab Tevatron collider. The final sample contains 2008 candidate events with an estimated background of 55%. From this we obtain σ·Br(Z→τ+τ-)=237±15(stat)±18(sys)±15(lum)pb, in agreement with the standard model prediction.
© 2005 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.71.072004
DOI:
10.1103/PhysRevD.71.072004
PACS:
13.38.Dg, 13.85.Qk, 14.70.Hp
*Visitor from University of Zurich, Zurich, Switzerland.
See Also
Erratum:
V. M. Abazov et al.,
Erratum: Measurement of σ(pp̅ →Z)·Br(Z→ττ) at √s=1.96 TeV [Phys. Rev. D 71, 072004 (2005)],
Phys. Rev. D 77, 039901 (2008).
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