Journal article
Search for resonant t ¯ t production in proton-proton collisions at √ s = 8 TeV
Physical review. D, Particles, fields, gravitation, and cosmology, Vol.93(1), 012001
01/08/2016
DOI: 10.1103/PhysRevD.93.012001
Abstract
A search is performed for the production of heavy resonances decaying into top-antitop quark pairs in proton-proton collisions at
√
s
=
8
TeV
. Data used for the analyses were collected with the CMS detector and correspond to an integrated luminosity of
19.7
fb
−
1
. The search is performed using events with three different final states, defined by the number of leptons (electrons and muons) from the
t
¯
t
→
W
b
W
b
decay. The analyses are optimized for reconstruction of top quarks with high Lorentz boosts, where jet substructure techniques are used to enhance the sensitivity. Results are presented for all channels and a combination is performed. No significant excess of events relative to the expected yield from standard model processes is observed. Upper limits on the production cross section of heavy resonances decaying to
t
¯
t
are calculated. A narrow leptophobic topcolor
Z
′
resonance with a mass below 2.4 TeV is excluded at 95% confidence level. Limits are also derived for a broad
Z
′
resonance with a 10% width relative to the resonance mass, and a Kaluza-Klein excitation of the gluon in the Randall-Sundrum model. These are the most stringent limits to date on heavy resonances decaying into top-antitop quark pairs.
Details
- Title: Subtitle
- Search for resonant t ¯ t production in proton-proton collisions at √ s = 8 TeV
- Creators
- CMS Collaboration (Institution)V Khachatryan - A. Alikhanyan National Laboratory
- Contributors
- B. Bilki (Contributor) - University of IowaW Clarida (Contributor) - University of IowaKamuran Dilsiz (Contributor) - University of Iowa, Physics and AstronomyS. Durgut (Contributor) - University of IowaR. P. Gandrajula (Contributor) - University of IowaM. Haytmyradov (Contributor) - University of IowaV Khristenko (Contributor) - University of IowaJ-P Merlo (Contributor) - University of IowaH Mermerkaya (Contributor) - University of IowaAlexi Mestvirishvili (Contributor) - University of Iowa, Physics and AstronomyA. Moeller (Contributor) - University of IowaJane M Nachtman (Contributor) - University of Iowa, Physics and AstronomyHasan Ogul (Contributor) - University of Iowa, Physics and AstronomyYasar Onel (Contributor) - University of Iowa, Physics and AstronomyF. Ozok (Contributor) - University of IowaAldo Penzo (Contributor) - University of Iowa, Physics and AstronomyS. Sen (Contributor) - University of IowaC. Snyder (Contributor) - University of IowaP Tan (Contributor) - University of IowaJames W Wetzel (Contributor) - University of Iowa, Physics and AstronomyE. Tiras (Contributor) - University of IowaKai Yi (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physical review. D, Particles, fields, gravitation, and cosmology, Vol.93(1), 012001
- DOI
- 10.1103/PhysRevD.93.012001
- ISSN
- 1550-7998
- eISSN
- 1550-2368
- Publisher
- American Physical Society
- Grant note
- DOI: 10.13039/501100003593, name: Conselho Nacional de Desenvolvimento Científico e Tecnológico; DOI: 10.13039/501100004586, name: Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro; DOI: 10.13039/501100001807, name: Fundação de Amparo à Pesquisa do Estado de São Paulo; DOI: 10.13039/501100002367, name: Chinese Academy of Sciences; DOI: 10.13039/501100002855, name: Ministry of Science and Technology of the People’s Republic of China; DOI: 10.13039/501100001809, name: National Natural Science Foundation of China; DOI: 10.13039/501100001810, name: Research Promotion Foundation; DOI: 10.13039/501100002341, name: Suomen Akatemia; DOI: 10.13039/501100004794, name: Centre National de la Recherche Scientifique; DOI: 10.13039/501100006489, name: Commissariat à l’Énergie Atomique et aux Énergies Alternatives/CEA; DOI: 10.13039/501100001659, name: Deutsche Forschungsgemeinschaft; DOI: 10.13039/501100003448, name: General Secretariat for Research and Technology; DOI: 10.13039/501100003621, name: Ministry of Science, ICT and Future Planning; DOI: 10.13039/501100003725, name: National Research Foundation of Korea; DOI: 10.13039/501100003141, name: Consejo Nacional de Ciencia y Tecnología; DOI: 10.13039/501100005324, name: Universidad Autónoma de San Luis Potosí; DOI: 10.13039/501100003822, name: Joint Institute for Nuclear Research; DOI: 10.13039/501100003443, name: Ministry of Education and Science of the Russian Federation; DOI: 10.13039/501100004219, name: Paul Scherrer Institut; DOI: 10.13039/100000001, name: National Science Foundation; DOI: 10.13039/100005156, name: Alexander von Humboldt-Stiftung; DOI: 10.13039/501100003132, name: Agentschap voor Innovatie door Wetenschap en Technologie; DOI: 10.13039/501100003335, name: Ministry of Education Youth and Science; DOI: 10.13039/501100003407, name: Ministero dell’Istruzione, dell’Università e della Ricerca, award: 20108T4XTM; DOI: 10.13039/100008982, name: Qatar National Research Fund; DOI: 10.13039/100000928, name: Welch Foundation; DOI: 10.13039/501100002428, name: Austrian Science Fund; DOI: 10.13039/501100002322, name: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior; DOI: 10.13039/501100004488, name: Hrvatska Zaklada za Znanost; DOI: 10.13039/501100002347, name: Bundesministerium für Bildung und Forschung; DOI: 10.13039/501100001502, name: Department of Atomic Energy, Government of India; DOI: 10.13039/501100006143, name: Department of Science and Technology, Government of Kerala; DOI: 10.13039/501100001602, name: Science Foundation Ireland; DOI: 10.13039/501100004007, name: Istituto Nazionale di Fisica Nucleare; DOI: 10.13039/501100004085, name: Ministry of Education, Science and Technology; DOI: 10.13039/501100004386, name: Universiti Malaya; DOI: 10.13039/501100003524, name: Ministry of Business, Innovation and Employment; DOI: 10.13039/501100004569, name: Ministerstwo Nauki i Szkolnictwa Wy?szego; DOI: 10.13039/501100004281, name: Narodowe Centrum Nauki; DOI: 10.13039/501100001871, name: Fundação para a Ciência e a Tecnologia; DOI: 10.13039/501100002674, name: Russian Academy of Sciences; DOI: 10.13039/501100002261, name: Russian Foundation for Basic Research; DOI: 10.13039/501100004564, name: Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja; DOI: 10.13039/501100003330, name: Secretaría de Estado de Investigacion, Desarrollo e Innovación; DOI: 10.13039/501100001711, name: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung; DOI: 10.13039/501100004742, name: National Academy of Sciences of Ukraine; DOI: 10.13039/501100000271, name: Science and Technology Facilities Council; DOI: 10.13039/100000015, name: U.S. Department of Energy; DOI: 10.13039/501100000781, name: European Research Council and EPLANET (European Union); DOI: 10.13039/100000879, name: Alfred P. Sloan Foundation; DOI: 10.13039/501100003134, name: Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture; DOI: 10.13039/100007388, name: Compagnia di San Paolo; DOI: 10.13039/501100004895, name: Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF; DOI: 10.13039/501100002873, name: Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University (Thailand); DOI: 10.13039/501100003510, name: Haridus- ja Teadusministeerium; DOI: 10.13039/501100003413, name: Bundesministerium für Wissenschaft, Forschung und Wirtschaft; DOI: 10.13039/501100004117, name: A.G. Leventis Foundation; DOI: 10.13039/501100004192, name: National Science and Technology Development Agency; DOI: 10.13039/501100004663, name: Ministry of Science and Technology, Taiwan; DOI: 10.13039/501100004410, name: Türkiye Bilimsel ve Teknolojik Ara?tirma Kurumu; DOI: 10.13039/501100003130, name: Fonds Wetenschappelijk Onderzoek; name: Colombian Funding Agency (COLCIENCIAS); DOI: 10.13039/501100008530, name: European Regional Development Fund; name: Helmholtz-Gemeinschaft Deutscher Forschungszentren; DOI: 10.13039/501100008688, name: CINVESTAV; name: UniZH; name: Canton Zurich; name: NSRF; name: Belgian Fonds de la Recherche Scientifique; name: Croatian Ministry of Science, Education and Sport; name: Ministry of Education and Research, Estonian Research Council; name: Finnish Ministry of Education and Culture; name: Helsinki Institute of Physics; name: Institut National de Physique Nucléaire et de Physique des Particules/CNRS; name: National Scientific Research Foundation; name: National Innovation Office; name: Institute for Studies in Theoretical Physics and Mathematics; DOI: 10.13039/501100008523, name: Lithuanian Academy of Sciences; name: SEP; DOI: 10.13039/501100008689, name: Pakistan Atomic Energy Commission; DOI: 10.13039/501100013131, name: Federal Agency of Atomic Energy of the Russian Federation; name: Programa Consolider-Ingenio 2010; name: ETH Board; DOI: 10.13039/501100003006, name: ETH Zurich; DOI: 10.13039/100012863, name: Thailand Center of Excellence in Physics; name: Institute for the Promotion of Teaching Science and Technology of Thailand; name: Special Task Force for Activating Research; DOI: 10.13039/100010440, name: Turkish Atomic Energy Authority; name: State Fund for Fundamental Researches; name: Marie-Curie programme; name: Belgian Federal Science Policy Office; name: Council of Science and Industrial Research; name: HOMING PLUS programme of the Foundation for Polish Science, cofinanced from European Union, Regional Development Fund; name: Consorzio per la Fisica (Trieste); name: National Priorities Research Program by Qatar National Research Fund
- Language
- English
- Date published
- 01/08/2016
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984440057602771
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