Location of Repository

Measurement of the W boson helicity in top quark decay at D0

By V.M. Abazov, B. Abbott, M. Abolins, B.S. Acharya, M. Adams, T. Adams, M. Agelou, S.H. Ahn, M. Ahsan, G.D. Alexeev, G. Alkhazov, A. Alton, G. Alverson, G.A. Alves, M. Anastasoaie, T. Andeen, S. Anderson, B. Andrieu, M.S. Anzelc, Y. Arnoud, M. Arov, A. Askew, B. Asman, A.C.S. Assis Jesus, O. Atramentov, C. Autermann, C. Avila, C. Ay, F. Badaud, A. Baden, L. Bagby, B. Baldin, D.V. Bandurin, P. Banerjee, S. Banerjee, E. Barberis, P. Bargassa, P. Baringer, C. Barnes, J. Barreto, J.F. Bartlett, U. Bassler, D. Bauer, A. Bean, M. Begalli, M. Begel, C. Belanger-Champagne, L. Bellantoni, A. Bellavance, J.A. Benitez, S.B. Beri, G. Bernardi, R. Bernhard, L. Berntzon, I. Bertram, M. Besançon, R. Beuselinck, V.A. Bezzubov, P.C. Bhat, V. Bhatnagar, M. Binder, C. Biscarat, K.M. Black, I. Blackler, G. Blazey, F. Blekman, S. Blessing, D. Bloch, K. Bloom, U. Blumenschein, A. Boehnlein, O. Boeriu, T.A. Bolton, G. Borissov, K. Bos, T. Bose, A. Brandt, R. Brock, G. Brooijmans, A. Bross, D. Brown, N.J. Buchanan, D. Buchholz, M. Buehler, V. Buescher, S. Burdin, S. Burke, T.H. Burnett, Emmanuel Busato, C.P. Buszello, J.M. Butler, P. Calfayan, S. Calvet, J. Cammin, S. Caron, W. Carvalho, B.C.K. Casey, N.M. Cason, H. Castilla-Valdez, D. Chakraborty, K.M. Chan, A. Chandra, F. Charles, E. Cheu, F. Chevallier, D.K. Cho, S. Choi, B. Choudhary, L. Christofek, D. Claes, B. Clement, C. Clément, Y. Coadou, M. Cooke, W.E. Cooper, D. Coppage, M. Corcoran, M.-C. Cousinou, B. Cox, S. Crépé-Renaudin, D. Cutts, M. Cwiok, H. Da Motta, A. Das, M. Das, B. Davies, G. Davies, G.A. Davis, K. De, P. De Jong, S.J. De Jong, E. De La Cruz-Burelo, C. De Oliveira Martins, J.D. Degenhardt, F. Déliot, M. Demarteau, R. Demina, P. Demine, D. Denisov, S.P. Denisov, S. Desai, H.T. Diehl, M. Diesburg, M. Doidge, A. Dominguez, H. Dong, L.V. Dudko, L. Duflot, S.R. Dugad, D. Duggan, A. Duperrin, J. Dyer, A. Dyshkant, M. Eads, D. Edmunds, T. Edwards, J. Ellison, J. Elmsheuser, V.D. Elvira, S. Eno, P. Ermolov, H. Evans, A. Evdokimov, V.N. Evdokimov, S.N. Fatakia, L. Feligioni, A.V. Ferapontov, T. Ferbel, F. Fiedler, F. Filthaut, W. Fisher, H.E. Fisk, I. Fleck, M. Ford, M. Fortner, H. Fox, S. Fu, S. Fuess, T. Gadfort, C.F. Galea, E. Gallas, E. Galyaev, C. Garcia, A. Garcia-Bellido, J. Gardner, V. Gavrilov, A. Gay, Pascal Gay, D. Gelé, R. Gelhaus, C.E. Gerber, Y. Gershtein, D. Gillberg, G. Ginther, N. Gollub, B. Gomez, A. Goussiou, P.D. Grannis, H. Greenlee, Z.D. Greenwood, E.M. Gregores, G. Grenier, Ph. Gris, J.-F. Grivaz, S. Grünendahl, M.W. Grünewald, F. Guo, J. Guo, G. Gutierrez, P. Gutierrez, A. Haas, N.J. Hadley, P. Haefner, S. Hagopian, J. Haley, I. Hall, R.E. Hall, L. Han, K. Hanagaki, K. Harder, A. Harel, R. Harrington, J.M. Hauptman, R. Hauser, J. Hays, T. Hebbeker, D. Hedin, J.G. Hegeman, J.M. Heinmiller, A.P. Heinson, U. Heintz, C. Hensel, K. Herner, G. Hesketh, M.D. Hildreth, R. Hirosky, J.D. Hobbs, B. Hoeneisen, H. Hoeth, M. Hohlfeld, S.J. Hong, R. Hooper, P. Houben, Y. Hu, Z. Hubaeck, V. Hynek, I. Iashvili, R. Illingworth, A.S. Ito, S. Jabeen, M. Jaffré, S. Jain, K. Jakobs, C. Jarvis, A. Jenkins, R. Jesik, K. Johns, C. Johnson, M. Johnson, A. Jonckheere, P. Jonsson, A. Juste, D. Kafer, S. Kahn, E. Kajfasz, A.M. Kalinin, J.M. Kalk, J.R. Kalk, S. Kappler, D. Karmanov, J. Kasper, I. Katsanos, D. Kau, R. Kaur, R. Kehoe, S. Kermiche, A. Khanov, A. Kharchilava, Y.M. Kharzheev, D. Khatidze, H. Kim, T.J. Kim, M.H. Kirby, B. Klima, J.M. Kohli, J.-P. Konrath, M. Kopal, V.M. Korablev, J. Kotcher, B. Kothari, A. Koubarovsky, A.V. Kozelov, J. Kozminski, D. Krop, A. Kryemadhi, S. Krzywdzinski, T. Kuhl, A. Kumar, S. Kunori, A. Kupco, T. Kurca, J. Kvita, S. Lammers, G. Landsberg, J. Lazoflores, A.C. Le Bihan, P. Lebrun, W.M. Lee, A. Leflat, F. Lehner, V. Lesne, J. Leveque, P. Lewis, J. Li, Q.Z. Li, J.G.R. Lima, D. Lincoln, J. Linnemann, V.V. Lipaev, R. Lipton, Z. Liu, L. Lobo, A. Lobodenko, M. Lokajicek, A. Lounis, P. Love, H.J. Lubatti, M. Lynker, A.L. Lyon, A.K.A. Maciel, R.J. Madaras, P. Mattig, C. Magass, A. Magerkurth, A.M. Magnan, N. Makovec, P.K. Mal, H.B. Malbouisson, S. Malik, V.L. Malyshev, H.S. Mao, Y. Maravin, M. Martens, R. McCarthy, D. Meder, A. Melnitchouk, A. Mendes, Luis Mendoza, M. Merkin, K.W. Merritt, A. Meyer, J. Meyer, M. Michaut, H. Miettinen, T. Millet, J. Mitrevski, J. Molina, N.K. Mondal, J. Monk, R.W. Moore, T. Moulik, G.-S. Muanza, M. Mulders, M. Mulhearn, L. Mundim, Y.D. Mutaf, E. Nagy, M. Naimuddin, M. Narain, N.A. Naumann, H.A. Neal, J.P. Negret, P. Neustroev, C. Noeding, A. Nomerotski, S.F. Novaes, T. Nunnemann, V. O'Dell, D.C. O'Neil, G. Obrant, V. Oguri, N. Oliveira, N. Oshima, R. Otec, G.J. Otero Y Garzon, M. Owen, P. Padley, N. Parashar, S.-J. Park, S.K. Park, J. Parsons, R. Partridge, N. Parua, A. Patwa, G. Pawloski, P.M. Perea, E. Perez, K. Peters, P. Petroff, M. Petteni, R. Piegaia, J. Piper, M.-A. Pleier, P.L.M. Podesta-Lerma, V.M. Podstavkov, Y. Pogorelov, M.-E. Pol, A. Pompos, B.G. Pope, A.V. Popov, W.L. Prado Da Silva, H.B. Prosper, S. Protopopescu, J. Qian, A. Quadt, B. Quinn, M.S. Rangel, K.J. Rani, K. Ranjan, P.A. Rapidis, P.N. Ratoff, P. Renkel, S. Reucroft, M. Rijssenbeek, I. Ripp-Baudot, F. Rizatdinova, S. Robinson, R.F. Rodrigues, C. Royon, P. Rubinov, R. Ruchti, V.I. Rud, G. Sajot, A. Sanchez-Hernandez, M.P. Sanders, A. Santoro, G. Savage, L. Sawyer, T. Scanlon, D. Schaile, R.D. Schamberger, Y. Scheglov, H. Schellman, P. Schieferdecker, C. Schmitt, C. Schwanenberger, A. Schwartzman, R. Schwienhorst, J. Sekaric, S. Sengupta, H. Severini, E. Shabalina, M. Shamim, V. Shary, A.A. Shchukin, W.D. Shephard, R.K. Shivpuri, D. Shpakov, V. Siccardi, R.A. Sidwell, V. Simak, V. Sirotenko, P. Skubic, P. Slattery, R.P. Smith, G.R. Snow, J. Snow, S. Snyder, S. Soldner-Rembold, X. Song, L. Sonnenschein, A. Sopczak, M. Sosebee, K. Soustruznik, M. Souza, B. Spurlock, J. Stark, J. Steele, K. Stevenson, V. Stolin, A. Stone, D.A. Stoyanova, J. Strandberg, S. Stranberg, M.A. Strang, M. Strauss, R. Strohmer, D. Strom, M. Strovink, L. Stutte, S. Sumowidagdo, A. Sznajder, M. Talby, P. Tamburello, W. Taylor, P. Telford, J. Temple, B. Tiller, M. Titov, V.V. Tokmenin, M. Tomoto, T. Toole, I. Torchiani, S. Towers, T. Trefzger, S. Trincaz-Duvoid, D. Tsybychev, B. Tuchming, C. Tully, A.S. Turcot, P.M. Tuts, R. Unalan, L. Uvarov, S. Uvarov, S. Uzunyan, B. Vachon, P.J. Van Den Berg, R. Van Kooten, W.M. Van Leeuwen, N. Varelas, E.W. Varnes, A. Vartapetian, I.A. Vasilyev, M. Vaupel, P. Verdier, L.S. Vertogradov, M. Verzocchi, F. Villeneuve-Seguier, P. Vint, J.-R. Vlimant, E. Von Toerne, M. Voutilainen, M. Vreeswijk, H.D. Wahl, L. Wang, M.H.L.S Wang, J. Warchol, G. Watts, M. Wayne, M. Weber, H. Weerts, N. Wermes, M. Wetstein, A. White, D. Wicke, G.W. Wilson, S.J. Wimpenny, M. Wobisch, J. Womersley, D.R. Wood, T.R. Wyatt, Y. Xie, N. Xuan, S. Yacoob, R. Yamada, M. Yan, T. Yasuda, Y.A. Yatsunenko, K. Yip, H.D. Yoo, S.W. Youn, C. Yu, J. Yu, A. Yurkewicz, A. Zatserklyaniy, C. Zeitnitz, D. Zhang, T. Zhao, B. Zhou, J. Zhu, M. Zielinski, D. Zieminska, A. Zieminski, V. Zutshi and E.G. Zverev

Abstract

Submitted to Phys. Rev. Lett - D0We present a measurement of the fraction f_+ of right-handed W bosons produced in top quark decays, based on a candidate sample of ttbar events in the l+jets and dilepton decay channels corresponding to an integrated luminosity of 370 pb^-1 collected by the DO detector at the Fermilab Tevatron ppbar Collider at sqrt{s}=1.96 TeV. We reconstruct the decay angle theta^* for each lepton. By comparing the \cos\theta^* distribution from the data with those for the expected background and signal for various values of f_+, we find $f_+=0.056 +- 0.080 (stat) +- 0.057 (syst)}. (f_+ < 0.23 at 95% C.L.), consistent with the standard model prediction of f_+=3.6 x10^-4

Topics: [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex]
Publisher: American Physical Society
Year: 2007
DOI identifier: 10.1103/PhysRevD.75.031102
OAI identifier: oai:HAL:in2p3-00101469v1
Provided by: Hal-Diderot
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://hal.in2p3.fr/in2p3-0010... (external link)
  • http://hal.in2p3.fr/in2p3-0010... (external link)
  • http://hal.in2p3.fr/in2p3-0010... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.