Abstract
A search for narrow resonances decaying to tt̄ pairs was carried out. No significant deviation was observed from the standard-model predictions at a top-quark mass of 175 GeV/c2. Upper limits were established at the 95% confidence level on the product of the production cross section and branching fraction to tt̄ for narrow resonances as a function of the resonance mass Mx. The existence of a leptophobic top-color particle with mass Mx<560 GeV/c2 was excluded for a width T x = 0.012Mx.
Original language | English |
---|---|
Article number | 221801 |
Pages (from-to) | 221801-1-221801-6 |
Journal | Physical Review Letters |
Volume | 92 |
Issue number | 22 |
DOIs | |
State | Published - Jul 4 2004 |
Externally published | Yes |
Funding
We thank the staffs at Fermilab and collaborating institutions and acknowledge support from the Department of Energy and National Science Foundation (U.S.A.), Commissariat à L’Energie Atomique and CNRS/Institut National de Physique Nucléaire et de Physique des Particules (France), Ministry for Science and Technology and Ministry for Atomic Energy (Russia), CAPES, CNPq and FAPERJ (Brazil), Departments of Atomic Energy and Science and Education (India), Colciencias (Colombia), CONACyT (Mexico), Ministry of Education and KOSEF (Korea), CONICET and UBACyT (Argentina), The Foundation for Fundamental Research on Matter (The Netherlands), PPARC (United Kingdom), Ministry of Education (Czech Republic), the A. P. Sloan Foundation, and the Research Corporation.
Funders | Funder number |
---|---|
A. P. Sloan Foundation | |
FAPERJ (Brazil), Departments of Atomic Energy and Science and Education (India), Colciencias | |
Ministry for Atomic Energy | |
National Science Foundation | |
U.S. Department of Energy | |
Research Corporation for Science Advancement | |
Ministry of Science and Technology | |
Stichting voor Fundamenteel Onderzoek der Materie | |
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior | |
Ministry of Education | |
Consejo Nacional de Investigaciones Científicas y Técnicas | |
Consejo Nacional de Ciencia y Tecnología | |
Conselho Nacional de Desenvolvimento Científico e Tecnológico | |
Korea Science and Engineering Foundation | |
Centre National de la Recherche Scientifique | |
Commissariat à l'Énergie Atomique et aux Énergies Alternatives | |
Secretaría de Ciencia y Técnica, Universidad de Buenos Aires | |
Institut National de Physique Nucléaire et de Physique des Particules | |
Particle Physics and Astronomy Research Council |