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Phys Rev Lett. 2013 Mar 22;110(12):121802. Epub 2013 Mar 20.

Search for resonant top-antitop production in the lepton plus jets decay mode using the full CDF data set.

Aaltonen T1, Amerio S2, Amidei D3, Anastassov A4, Annovi A5, Antos J6, Apollinari G4, Appel JA4, Arisawa T7, Artikov A8, Asaadi J9, Ashmanskas W4, Auerbach B10, Aurisano A9, Azfar F11, Badgett W4, Bae T12, Barbaro-Galtieri A13, Barnes VE14, Barnett BA15, Barria P16, Bartos P6, Bauce M17, Bedeschi F18, Behari S4, Bellettini G19, Bellinger J20, Benjamin D21, Beretvas A4, Bhatti A22, Bland KR23, Blumenfeld B15, Bocci A21, Bodek A24, Bortoletto D14, Boudreau J25, Boveia A26, Brigliadori L27, Bromberg C28, Brucken E1, Budagov J8, Budd HS24, Burkett K4, Busetto G17, Bussey P29, Butti P19, Buzatu A29, Calamba A30, Camarda S31, Campanelli M32, Canelli F33, Carls B34, Carlsmith D20, Carosi R18, Carrillo S35, Casal B36, Casarsa M37, Castro A27, Catastini P38, Cauz D37, Cavaliere V34, Cavalli-Sforza M31, Cerri A13, Cerrito L32, Chen YC39, Chertok M40, Chiarelli G18, Chlachidze G4, Cho K12, Chokheli D8, Ciocci MA16, Clark A41, Clarke C42, Convery ME4, Conway J40, Corbo M4, Cordelli M5, Cox CA40, Cox DJ40, Cremonesi M18, Cruz D9, Cuevas J36, Culbertson R4, d'Ascenzo N4, Datta M4, De Barbaro P24, Demortier L22, Deninno M43, Devoto F1, d'Errico M17, Di Canto A19, Di Ruzza B4, Dittmann JR23, D'Onofrio M44, Donati S19, Dorigo M45, Driutti A37, Ebina K7, Edgar R3, Elagin A9, Erbacher R40, Errede S34, Esham B34, Eusebi R9, Farrington S11, Fernández Ramos JP46, Field R35, Flanagan G4, Forrest R40, Franklin M38, Freeman JC4, Frisch H26, Funakoshi Y7, Garfinkel AF14, Garosi P16, Gerberich H34, Gerchtein E4, Giagu S47, Giakoumopoulou V48, Gibson K25, Ginsburg CM4, Giokaris N48, Giromini P5, Giurgiu G15, Glagolev V8, Glenzinski D4, Gold M49, Goldin D9, Golossanov A4, Gomez G36, Gomez-Ceballos G50, Goncharov M50, González López O46, Gorelov I49, Goshaw AT21, Goulianos K22, Gramellini E43, Grinstein S31, Grosso-Pilcher C26, Group RC51, Guimaraes da Costa J38, Hahn SR4, Han JY24, Happacher F5, Hara K52, Hare M53, Harr RF42, Harrington-Taber T4, Hatakeyama K23, Hays C11, Heinrich J54, Herndon M20, Hocker A4, Hong Z9, Hopkins W4, Hou S39, Hughes RE55, Husemann U56, Hussein M28, Huston J28, Introzzi G57, Iori M58, Ivanov A40, James E4, Jang D30, Jayatilaka B4, Jeon EJ12, Jindariani S4, Jones M14, Joo KK12, Jun SY30, Junk TR4, Kambeitz M59, Kamon T60, Karchin PE42, Kasmi A23, Kato Y61, Ketchum W26, Keung J54, Kilminster B4, Kim DH12, Kim HS12, Kim JE12, Kim MJ5, Kim SB12, Kim SH52, Kim YK26, Kim YJ12, Kimura N7, Kirby M4, Knoepfel K4, Kondo K7, Kong DJ12, Konigsberg J35, Kotwal AV21, Kreps M59, Kroll J54, Kruse M21, Kuhr T59, Kurata M52, Laasanen AT14, Lammel S4, Lancaster M32, Lannon K55, Latino G16, Lee HS12, Lee JS12, Leo S18, Leone S18, Lewis JD4, Limosani A21, Lipeles E54, Liu H62, Liu Q14, Liu T4, Lockwitz S56, Loginov A56, Lucchesi D17, Lueck J59, Lujan P13, Lukens P4, Lungu G22, Lys J13, Lysak R6, Madrak R4, Maestro P16, Malik S22, Manca G44, Manousakis-Katsikakis A48, Margaroli F47, Marino P63, Martínez M31, Matera K34, Mattson ME42, Mazzacane A4, Mazzanti P43, McNulty R44, Mehta A44, Mehtala P1, Mesropian C22, Miao T4, Mietlicki D3, Mitra A39, Miyake H52, Moed S4, Moggi N43, Moon CS4, Moore R4, Morello MJ63, Mukherjee A4, Muller T59, Murat P4, Mussini M27, Nachtman J4, Nagai Y52, Naganoma J7, Nakano I64, Napier A53, Nett J9, Neu C62, Nigmanov T25, Nodulman L10, Noh SY12, Norniella O34, Oakes L11, Oh SH21, Oh YD12, Oksuzian I62, Okusawa T61, Orava R1, Ortolan L31, Pagliarone C37, Palencia E36, Palni P49, Papadimitriou V4, Parker W20, Pauletta G65, Paulini M30, Paus C50, Phillips TJ21, Piacentino G18, Pianori E54, Pilot J55, Pitts K34, Plager C66, Pondrom L20, Poprocki S4, Potamianos K13, Prokoshin F8, Pranko A13, Ptohos F5, Punzi G19, Ranjan N14, Redondo Fernández I46, Renton P11, Rescigno M47, Riddick T32, Rimondi F43, Ristori L67, Robson A29, Rodriguez T54, Rolli S53, Ronzani M19, Roser R4, Rosner JL26, Ruffini F16, Ruiz A36, Russ J30, Rusu V4, Safonov A9, Sakumoto WK24, Sakurai Y7, Santi L65, Sato K52, Saveliev V4, Savoy-Navarro A4, Schlabach P4, Schmidt EE4, Schwarz T3, Scodellaro L36, Scuri F18, Seidel S49, Seiya Y61, Semenov A8, Sforza F19, Shalhout SZ40, Shears T44, Shepard PF25, Shimojima M52, Shochet M26, Shreyber-Tecker I68, Simonenko A8, Sinervo P69, Sliwa K53, Smith JR40, Snider FD4, Sorin V31, Song H25, Stancari M4, St Denis R29, Stelzer B69, Stelzer-Chilton O69, Stentz D4, Strologas J49, Sudo Y52, Sukhanov A4, Suslov I8, Takemasa K52, Takeuchi Y52, Tang J26, Tecchio M3, Teng PK39, Thom J4, Thomson E54, Thukral V9, Toback D9, Tokar S6, Tollefson K28, Tomura T52, Tonelli D4, Torre S5, Torretta D4, Totaro P2, Trovato M63, Ukegawa F52, Uozumi S12, Vázquez F35, Velev G4, Vellidis C4, Vernieri C63, Vidal M14, Vilar R36, Vizán J36, Vogel M49, Volpi G5, Wagner P54, Wallny R66, Wang SM39, Warburton A69, Waters D32, Wester WC4, Whiteson D54, Wicklund AB10, Wilbur S26, Williams HH54, Wilson JS3, Wilson P4, Winer BL55, Wittich P4, Wolbers S4, Wolfe H55, Wright T3, Wu X41, Wu Z23, Yamamoto K61, Yamato D61, Yang T4, Yang UK26, Yang YC12, Yao WM13, Yeh GP4, Yi K4, Yoh J4, Yorita K7, Yoshida T61, Yu GB21, Yu I12, Zanetti AM37, Zeng Y21, Zhou C21, Zucchelli S27; CDF Collaboration.

Author information

1
Department of Physics, Division of High Energy Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland.
2
Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy.
3
University of Michigan, Ann Arbor, Michigan 48109, USA.
4
Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
5
Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy.
6
Comenius University, 842 48 Bratislava, Slovakia; Institute of Experimental Physics, 040 01 Kosice, Slovakia.
7
Waseda University, Tokyo 169, Japan.
8
Joint Institute for Nuclear Research, RU-141980 Dubna, Russia.
9
Texas A&M University, College Station, Texas 77843, USA.
10
Argonne National Laboratory, Argonne, Illinois 60439, USA.
11
University of Oxford, Oxford OX1 3RH, United Kingdom.
12
Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea; Ewha Womans University, Seoul 120-750, Korea.
13
Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
14
Purdue University, West Lafayette, Indiana 47907, USA.
15
The Johns Hopkins University, Baltimore, Maryland 21218, USA.
16
Istituto Nazionale di Fisica Nucleare Pisa, I-56127 Pisa, Italy and University of Siena, I-56127 Pisa, Italy.
17
Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy and University of Padova, I-35131 Padova, Italy.
18
Istituto Nazionale di Fisica Nucleare Pisa, I-56127 Pisa, Italy.
19
Istituto Nazionale di Fisica Nucleare Pisa, I-56127 Pisa, Italy and University of Pisa, I-56127 Pisa, Italy.
20
University of Wisconsin, Madison, Wisconsin 53706, USA.
21
Duke University, Durham, North Carolina 27708, USA.
22
The Rockefeller University, New York, New York 10065, USA.
23
Baylor University, Waco, Texas 76798, USA.
24
University of Rochester, Rochester, New York 14627, USA.
25
University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
26
Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
27
Istituto Nazionale di Fisica Nucleare Bologna, I-40127 Bologna, Italy and University of Bologna, I-40127 Bologna, Italy.
28
Michigan State University, East Lansing, Michigan 48824, USA.
29
Glasgow University, Glasgow G12 8QQ, United Kingdom.
30
Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.
31
Institut de Fisica d'Altes Energies, ICREA, Universitat Autonoma de Barcelona, E-08193 Bellaterra (Barcelona), Spain.
32
University College London, London WC1E 6BT, United Kingdom.
33
Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA and Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
34
University of Illinois, Urbana, Illinois 61801, USA.
35
University of Florida, Gainesville, Florida 32611, USA.
36
Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain.
37
Istituto Nazionale di Fisica Nucleare Trieste/Udine, I-33100 Udine, Italy.
38
Harvard University, Cambridge, Massachusetts 02138, USA.
39
Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China.
40
University of California, Davis, Davis, California 95616, USA.
41
University of Geneva, CH-1211 Geneva 4, Switzerland.
42
Wayne State University, Detroit, Michigan 48201, USA.
43
Istituto Nazionale di Fisica Nucleare Bologna, I-40127 Bologna, Italy.
44
University of Liverpool, Liverpool L69 7ZE, United Kingdom.
45
Istituto Nazionale di Fisica Nucleare Trieste/Udine, I-33100 Udine, Italy and University of Trieste, I-34127 Trieste, Italy.
46
Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, E-28040 Madrid, Spain.
47
Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, I-00185 Roma, Italy.
48
University of Athens, 157 71 Athens, Greece.
49
University of New Mexico, Albuquerque, New Mexico 87131, USA.
50
Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
51
Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA and University of Virginia, Charlottesville, Virginia 22906, USA.
52
University of Tsukuba, Tsukuba, Ibaraki 305, Japan.
53
Tufts University, Medford, Massachusetts 02155, USA.
54
University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
55
The Ohio State University, Columbus, Ohio 43210, USA.
56
Yale University, New Haven, Connecticut 06520, USA.
57
Istituto Nazionale di Fisica Nucleare Pisa, I-56127 Pisa, Italy and INFN Pavia and University of Pavia, I-27100 Pavia, Italy.
58
Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, I-00185 Roma, Italy and Sapienza Università di Roma, I-00185 Roma, Italy.
59
Institut für Experimentelle Kernphysik, Karlsruhe Institute of Technology, D-76131 Karlsruhe, Germany.
60
Center for High Energy Physics: Kyungpook National University, Daegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; Sungkyunkwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon 305-806, Korea; Chonnam National University, Gwangju 500-757, Korea; Chonbuk National University, Jeonju 561-756, Korea; Ewha Womans University, Seoul 120-750, Korea and Texas A&M University, College Station, Texas 77843, USA.
61
Osaka City University, Osaka 588, Japan.
62
University of Virginia, Charlottesville, Virginia 22906, USA.
63
Istituto Nazionale di Fisica Nucleare Pisa, I-56127 Pisa, Italy and Scuola Normale Superiore, I-56127 Pisa, Italy.
64
Okayama University, Okayama 700-8530, Japan.
65
Istituto Nazionale di Fisica Nucleare Trieste/Udine, I-33100 Udine, Italy and University of Udine, I-33100 Udine, Italy.
66
University of California, Los Angeles, Los Angeles, California 90024, USA.
67
Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA and Istituto Nazionale di Fisica Nucleare Pisa, I-56127 Pisa, Italy.
68
Institution for Theoretical and Experimental Physics, ITEP, Moscow 117259, Russia.
69
Institute of Particle Physics, McGill University, Montréal, Québec H3A 2T8, Canada; Simon Fraser University, Burnaby, British Columbia V5A 1S6, Canada; University of Toronto, Toronto, Ontario M5S 1A7, Canada; and TRIUMF, Vancouver, British Columbia V6T 2A3, Canada.

Abstract

This Letter reports a search for a narrow resonant state decaying into two W bosons and two b quarks where one W boson decays leptonically and the other decays into a quark-antiquark pair. The search is particularly sensitive to top-antitop resonant production. We use the full data sample of proton-antiproton collisions at a center-of-mass energy of 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron, corresponding to an integrated luminosity of 9.45 fb(-1). No evidence for resonant production is found, and upper limits on the production cross section times branching ratio for a narrow resonant state are extracted. Within a specific benchmark model, we exclude a Z' boson with mass, M(Z'), below 915 GeV/c(2) decaying into a top-antitop pair at the 95% credibility level assuming a Z' boson decay width of Γ(Z') = 0.012 M(Z'). This is the most sensitive search for a narrow qq-initiated tt resonance in the mass region below 750 GeV/c(2).

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