Phys. Rev. D
77,
091105(R)
(2008)
[7 pages]
Search for third generation vector leptoquarks in pp̅ collisions at √s=1.96 TeV
T. Aaltonen et al. CDF Collaboration
Show All Authors/Affiliations
Hide All Authors/Affiliations
T. Aaltonen23, A. Abulencia24, J. Adelman13, T. Affolder10, T. Akimoto55, M. G. Albrow17, S. Amerio43, D. Amidei35, A. Anastassov52, K. Anikeev17, A. Annovi19, J. Antos14, M. Aoki55, G. Apollinari17, T. Arisawa57, A. Artikov15, W. Ashmanskas17, A. Attal3, A. Aurisano53, F. Azfar42, P. Azzi-Bacchetta43, P. Azzurri46, N. Bacchetta43, W. Badgett17, A. Barbaro-Galtieri29, V. E. Barnes48, B. A. Barnett25, S. Baroiant7, V. Bartsch31, G. Bauer33, P.-H. Beauchemin34, F. Bedeschi46, S. Behari25, G. Bellettini46, J. Bellinger59, A. Belloni33, D. Benjamin16, A. Beretvas17, J. Beringer29, T. Berry30, A. Bhatti50, M. Binkley17, D. Bisello43, I. Bizjak31, R. E. Blair2, C. Blocker6, B. Blumenfeld25, A. Bocci16, A. Bodek49, V. Boisvert49, G. Bolla48, A. Bolshov33, D. Bortoletto48, J. Boudreau47, A. Boveia10, B. Brau10, L. Brigliadori5, C. Bromberg36, E. Brubaker13, J. Budagov15, H. S. Budd49, S. Budd24, K. Burkett17, G. Busetto43, P. Bussey21, A. Buzatu34, K. L. Byrum2, S. Cabrera16,j, M. Campanelli20, M. Campbell35, F. Canelli17, A. Canepa45, S. Carrillo18,b, D. Carlsmith59, R. Carosi46, S. Carron34, B. Casal11, M. Casarsa54, A. Castro5, P. Catastini46, D. Cauz54, M. Cavalli-Sforza3, A. Cerri29, L. Cerrito31,f, S. H. Chang28, Y. C. Chen1, M. Chertok7, G. Chiarelli46, G. Chlachidze17, F. Chlebana17, I. Cho28, K. Cho28, D. Chokheli15, J. P. Chou22, G. Choudalakis33, S. H. Chuang52, K. Chung12, W. H. Chung59, Y. S. Chung49, M. Cilijak46, C. I. Ciobanu24, M. A. Ciocci46, A. Clark20, D. Clark6, M. Coca16, G. Compostella43, M. E. Convery50, J. Conway7, B. Cooper31, K. Copic35, M. Cordelli19, G. Cortiana43, F. Crescioli46, C. Cuenca Almenar7,j, J. Cuevas11,e, R. Culbertson17, J. C. Cully35, S. DaRonco43, M. Datta17, S. D’Auria21, T. Davies21, D. Dagenhart17, P. de Barbaro49, S. De Cecco51, A. Deisher29, G. De Lentdecker49,‡, G. De Lorenzo3, M. Dell’Orso46, F. Delli Paoli43, L. Demortier50, J. Deng16, M. Deninno5, D. De Pedis51, P. F. Derwent17, G. P. Di Giovanni44, C. Dionisi51, B. Di Ruzza54, J. R. Dittmann4, M. D’Onofrio3, C. Dörr26, S. Donati46, P. Dong8, J. Donini43, T. Dorigo43, S. Dube52, J. Efron39, R. Erbacher7, D. Errede24, S. Errede24, R. Eusebi17, H. C. Fang29, S. Farrington30, I. Fedorko46, W. T. Fedorko13, R. G. Feild60, M. Feindt26, J. P. Fernandez32, R. Field18, G. Flanagan48, R. Forrest7, S. Forrester7, M. Franklin22, J. C. Freeman29, I. Furic13, M. Gallinaro50, J. Galyardt12, J. E. Garcia46, F. Garberson10, A. F. Garfinkel48, C. Gay60, H. Gerberich24, D. Gerdes35, S. Giagu51, P. Giannetti46, K. Gibson47, J. L. Gimmell49, C. Ginsburg17, N. Giokaris15,*, M. Giordani54, P. Giromini19, M. Giunta46, G. Giurgiu25, V. Glagolev15, D. Glenzinski17, M. Gold37, N. Goldschmidt18, J. Goldstein42,†, A. Golossanov17, G. Gomez11, G. Gomez-Ceballos33, M. Goncharov53, O. González32, I. Gorelov37, A. T. Goshaw16, K. Goulianos50, A. Gresele43, S. Grinstein22, C. Grosso-Pilcher13, R. C. Group17, U. Grundler24, J. Guimaraes da Costa22, Z. Gunay-Unalan36, C. Haber29, K. Hahn33, S. R. Hahn17, E. Halkiadakis52, A. Hamilton20, B.-Y. Han49, J. Y. Han49, R. Handler59, F. Happacher19, K. Hara55, D. Hare52, M. Hare56, S. Harper42, R. F. Harr58, R. M. Harris17, M. Hartz47, K. Hatakeyama50, J. Hauser8, C. Hays42, M. Heck26, A. Heijboer45, B. Heinemann29, J. Heinrich45, C. Henderson33, M. Herndon59, J. Heuser26, D. Hidas16, C. S. Hill10,†, D. Hirschbuehl26, A. Hocker17, A. Holloway22, S. Hou1, M. Houlden30, S.-C. Hsu9, B. T. Huffman42, R. E. Hughes39, U. Husemann60, J. Huston36, J. Incandela10, G. Introzzi46, M. Iori51, A. Ivanov7, B. Iyutin33, E. James17, D. Jang52, B. Jayatilaka16, D. Jeans51, E. J. Jeon28, S. Jindariani18, W. Johnson7, M. Jones48, K. K. Joo28, S. Y. Jun12, J. E. Jung28, T. R. Junk24, T. Kamon53, P. E. Karchin58, Y. Kato41, Y. Kemp26, R. Kephart17, U. Kerzel26, V. Khotilovich53, B. Kilminster39, D. H. Kim28, H. S. Kim28, J. E. Kim28, M. J. Kim17, S. B. Kim28, S. H. Kim55, Y. K. Kim13, N. Kimura55, L. Kirsch6, S. Klimenko18, M. Klute33, B. Knuteson33, B. R. Ko16, K. Kondo57, D. J. Kong28, J. Konigsberg18, A. Korytov18, A. V. Kotwal16, A. C. Kraan45, J. Kraus24, M. Kreps26, J. Kroll45, N. Krumnack4, M. Kruse16, V. Krutelyov10, T. Kubo55, S. E. Kuhlmann2, T. Kuhr26, N. P. Kulkarni58, Y. Kusakabe57, S. Kwang13, A. T. Laasanen48, S. Lai34, S. Lami46, S. Lammel17, M. Lancaster31, R. L. Lander7, K. Lannon39, A. Lath52, G. Latino46, I. Lazzizzera43, T. LeCompte2, J. Lee49, J. Lee28, Y. J. Lee28, S. W. Lee53,h, R. Lefèvre20, N. Leonardo33, S. Leone46, S. Levy13, J. D. Lewis17, C. Lin60, C. S. Lin17, M. Lindgren17, E. Lipeles9, A. Lister7, D. O. Litvintsev17, T. Liu17, N. S. Lockyer45, A. Loginov60, M. Loreti43, R.-S. Lu1, D. Lucchesi43, P. Lujan29, P. Lukens17, G. Lungu18, L. Lyons42, J. Lys29, R. Lysak14, E. Lytken48, P. Mack26, D. MacQueen34, R. Madrak17, K. Maeshima17, K. Makhoul33, T. Maki23, P. Maksimovic25, S. Malde42, S. Malik31, G. Manca30, A. Manousakis15,*, F. Margaroli5, R. Marginean17, C. Marino26, C. P. Marino24, A. Martin60, M. Martin25, V. Martin21,‡‡, M. Martínez3, R. Martínez-Ballarín32, T. Maruyama55, P. Mastrandrea51, T. Masubuchi55, H. Matsunaga55, M. E. Mattson58, R. Mazini34, P. Mazzanti5, K. S. McFarland49, P. McIntyre53, R. McNulty30,††, A. Mehta30, P. Mehtala23, S. Menzemer11,a, A. Menzione46, P. Merkel48, C. Mesropian50, A. Messina36, T. Miao17, N. Miladinovic6, J. Miles33, R. Miller36, C. Mills10, M. Milnik26, A. Mitra1, G. Mitselmakher18, A. Miyamoto27, S. Moed20, N. Moggi5, B. Mohr8, C. S. Moon28, R. Moore17, M. Morello46, P. Movilla Fernandez29, J. Mülmenstädt29, A. Mukherjee17, Th. Muller26, R. Mumford25, P. Murat17, M. Mussini5, J. Nachtman17, A. Nagano55, J. Naganoma57, K. Nakamura55, I. Nakano40, A. Napier56, V. Necula16, C. Neu45, M. S. Neubauer9, J. Nielsen29,g, L. Nodulman2, O. Norniella3, E. Nurse31, S. H. Oh16, Y. D. Oh28, I. Oksuzian18, T. Okusawa41, R. Oldeman30, R. Orava23, K. Osterberg23, C. Pagliarone46, E. Palencia11, V. Papadimitriou17, A. Papaikonomou26, A. A. Paramonov13, B. Parks39, S. Pashapour34, J. Patrick17, G. Pauletta54, M. Paulini12, C. Paus33, D. E. Pellett7, A. Penzo54, T. J. Phillips16, G. Piacentino46, J. Piedra44, L. Pinera18, K. Pitts24, C. Plager8, L. Pondrom59, X. Portell3, O. Poukhov15, N. Pounder42, F. Prakoshyn15, A. Pronko17, J. Proudfoot2, F. Ptohos19,**, G. Punzi46, J. Pursley25, J. Rademacker42,†, A. Rahaman47, V. Ramakrishnan59, N. Ranjan48, I. Redondo32, B. Reisert17, V. Rekovic37, P. Renton42, M. Rescigno51, S. Richter26, F. Rimondi5, L. Ristori46, A. Robson21, T. Rodrigo11, E. Rogers24, S. Rolli56, R. Roser17, M. Rossi54, R. Rossin10, P. Roy34, A. Ruiz11, J. Russ12, V. Rusu13, H. Saarikko23, A. Safonov53, W. K. Sakumoto49, G. Salamanna51, O. Saltó3, L. Santi54, S. Sarkar51, L. Sartori46, K. Sato17, P. Savard34, A. Savoy-Navarro44, T. Scheidle26, P. Schlabach17, E. E. Schmidt17, M. P. Schmidt60, M. Schmitt38, T. Schwarz7, L. Scodellaro11, A. L. Scott10, A. Scribano46, F. Scuri46, A. Sedov48, S. Seidel37, Y. Seiya41, A. Semenov15, L. Sexton-Kennedy17, A. Sfyrla20, S. Z. Shalhout58, M. D. Shapiro29, T. Shears30, P. F. Shepard47, D. Sherman22, M. Shimojima55,d, M. Shochet13, Y. Shon59, I. Shreyber20, A. Sidoti46, P. Sinervo34, A. Sisakyan15, A. J. Slaughter17, J. Slaunwhite39, K. Sliwa56, J. R. Smith7, F. D. Snider17, R. Snihur34, M. Soderberg35, A. Soha7, S. Somalwar52, V. Sorin36, J. Spalding17, F. Spinella46, T. Spreitzer34, P. Squillacioti46, M. Stanitzki60, A. Staveris-Polykalas46, R. St. Denis21, B. Stelzer8, O. Stelzer-Chilton42, D. Stentz38, J. Strologas37, D. Stuart10, J. S. Suh28, A. Sukhanov18, H. Sun56, I. Suslov15, T. Suzuki55, A. Taffard24,i, R. Takashima40, Y. Takeuchi55, R. Tanaka40, M. Tecchio35, P. K. Teng1, K. Terashi50, J. Thom17,§, A. S. Thompson21, E. Thomson45, P. Tipton60, V. Tiwari12, S. Tkaczyk17, D. Toback53, S. Tokar14, K. Tollefson36, T. Tomura55, D. Tonelli46, S. Torre19, D. Torretta17, S. Tourneur44, W. Trischuk34, S. Tsuno40, Y. Tu45, N. Turini46, F. Ukegawa55, S. Uozumi55, S. Vallecorsa20, N. van Remortel23, A. Varganov35, E. Vataga37, F. Vazquez18,b, G. Velev17, C. Vellidis46,*, G. Veramendi24, V. Veszpremi48, M. Vidal32, R. Vidal17, I. Vila11, R. Vilar11, T. Vine31, M. Vogel37, I. Vollrath34, I. Volobouev29,h, G. Volpi46, F. Würthwein9, P. Wagner53, R. G. Wagner2, R. L. Wagner17, J. Wagner26, W. Wagner26, R. Wallny8, S. M. Wang1, A. Warburton34, D. Waters31, M. Weinberger53, W. C. Wester, III17, B. Whitehouse56, D. Whiteson45,i, A. B. Wicklund2, E. Wicklund17, G. Williams34, H. H. Williams45, P. Wilson17, B. L. Winer39, P. Wittich17,§, S. Wolbers17, C. Wolfe13, T. Wright35, X. Wu20, S. M. Wynne30, A. Yagil9, K. Yamamoto41, J. Yamaoka52, T. Yamashita40, C. Yang60, U. K. Yang13,c, Y. C. Yang28, W. M. Yao29, G. P. Yeh17, J. Yoh17, K. Yorita13, T. Yoshida41, G. B. Yu49, I. Yu28, S. S. Yu17, J. C. Yun17, L. Zanello51, A. Zanetti54, I. Zaw22, X. Zhang24, J. Zhou52, and S. Zucchelli5 (CDF Collaboration)
1Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China 2Argonne National Laboratory, Argonne, Illinois 60439, USA 3Institut de Fisica d’Altes Energies, Universitat Autonoma de Barcelona, E-08193, Bellaterra (Barcelona), Spain 4Baylor University, Waco, Texas 76798, USA 5Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy 6Brandeis University, Waltham, Massachusetts 02254, USA 7University of California, Davis, Davis, California 95616, USA 8University of California, Los Angeles, Los Angeles, California 90024, USA 9University of California, San Diego, La Jolla, California 92093, USA 10University of California, Santa Barbara, Santa Barbara, California 93106, USA 11Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain 12Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA 13Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA 14Comenius University, 842 48 Bratislava, Slovakia; Institute of Experimental Physics, 040 01 Kosice, Slovakia 15Joint Institute for Nuclear Research, RU-141980 Dubna, Russia 16Duke University, Durham, North Carolina 27708, USA 17Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA 18University of Florida, Gainesville, Florida 32611, USA 19Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy 20University of Geneva, CH-1211 Geneva 4, Switzerland 21Glasgow University, Glasgow G12 8QQ, United Kingdom 22Harvard University, Cambridge, Massachusetts 02138, USA 23Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland 24University of Illinois, Urbana, Illinois 61801, USA 25The Johns Hopkins University, Baltimore, Maryland 21218, USA 26Institut für Experimentelle Kernphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany 27High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan 28Center for High Energy Physics: Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; SungKyunKwan University, Suwon 440-746, Korea 29Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA 30University of Liverpool, Liverpool L69 7ZE, United Kingdom 31University College London, London WC1E 6BT, United Kingdom 32Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, E-28040 Madrid, Spain 33Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA 34Institute of Particle Physics: McGill University, Montréal, Canada H3A 2T8; and University of Toronto, Toronto, Canada M5S 1A7 35University of Michigan, Ann Arbor, Michigan 48109, USA 36Michigan State University, East Lansing, Michigan 48824, USA 37University of New Mexico, Albuquerque, New Mexico 87131, USA 38Northwestern University, Evanston, Illinois 60208, USA 39The Ohio State University, Columbus, Ohio 43210, USA 40Okayama University, Okayama 700-8530, Japan 41Osaka City University, Osaka 588, Japan 42University of Oxford, Oxford OX1 3RH, United Kingdom 43University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy 44LPNHE, Universite Pierre et Marie Curie/IN2P3-CNRS, UMR7585, Paris, F-75252 France 45University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA 46Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy 47University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA 48Purdue University, West Lafayette, Indiana 47907, USA 49University of Rochester, Rochester, New York 14627, USA 50The Rockefeller University, New York, New York 10021, USA 51Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome “La Sapienza,” I-00185 Roma, Italy 52Rutgers University, Piscataway, New Jersey 08855, USA 53Texas A&M University, College Station, Texas 77843, USA 54Istituto Nazionale di Fisica Nucleare, University of Trieste/Udine, Italy 55University of Tsukuba, Tsukuba, Ibaraki 305, Japan 56Tufts University, Medford, Massachusetts 02155, USA 57Waseda University, Tokyo 169, Japan 58Wayne State University, Detroit, Michigan 48201, USA 59University of Wisconsin, Madison, Wisconsin 53706 60Yale University, New Haven, Connecticut 06520, USA
Received 15 June 2007; published 30 May 2008
We search for a third generation vector leptoquark (VLQ3) that decays to a b quark and tau lepton using the CDF II detector and 320 pb-1 of integrated luminosity from the Fermilab Tevatron. Observing a number of events in agreement with standard model expectations, we obtain, assuming Yang-Mills (minimal) couplings, the most stringent upper limit on the VLQ3 pair production cross section of 344 fb (493 fb) and lower limit on the VLQ3 mass of 317 GeV/c2 (251 GeV/c2) at 95% C.L.
© 2008 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.77.091105
DOI:
10.1103/PhysRevD.77.091105
*With visitors from the University of Athens, 15784 Athens, Greece, †With visitors from the University of Bristol, Bristol BS8 1TL, United Kingdom, ‡With visitors from the University Libre de Bruxelles, B-1050 Brussels, Belgium, §With visitors from Cornell University, Ithaca, NY 14853, USA **With visitors from the University of Cyprus, Nicosia CY-1678, Cyprus, ††With visitors from the University College Dublin, Dublin 4, Ireland, ‡‡With visitors from the University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom, aWith visitors from the University of Heidelberg, D-69120 Heidelberg, Germany, bWith visitors from Universidad Iberoamericana, Mexico D.F., Mexico, cWith visitors from the University of Manchester, Manchester M13 9PL, England, dWith visitors from the Nagasaki Institute of Applied Science, Nagasaki, Japan, eWith visitors from the University de Oviedo, E-33007 Oviedo, Spain, fWith visitors from the University of London, Queen Mary College, London, E1 4NS, England, gWith visitors from the University of California Santa Cruz, Santa Cruz, CA 95064, USA hWith visitors from Texas Tech University, Lubbock, TX 79409, USA iWith visitors from the University of California, Irvine, Irvine, CA 92697, USA jWith visitors from IFIC (CSIC-Universitat de Valencia), 46071 Valencia, Spain.
|
|