A New Boson with a Mass of 125 GeV Observed with the CMS Experiment at the Large Hadron Collider
CMS Collaboration (ukupan broj autora: 2899)
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The Higgs boson was postulated nearly five decades ago within the framework of the standard model of particle physics and has been the subject of numerous searches at accelerators around the world. Its discovery would verify the existence of a complex scalar field thought to give mass to three of the carriers of the electroweak force-the W+, W-, and Z(0) bosons-as well as to the fundamental quarks and leptons. The CMS Collaboration has observed, with a statistical significance of five standard deviations, a new particle produced in proton-proton collisions at the Large Hadron Collider at CERN. The evidence is strongest in the diphoton and four-lepton (electrons and/or muons) final states, which provide the best mass resolution in the CMS detector. The probability of the observed signal being due to a random fluctuation of the background is about 1 in 3 x 10(6). The new particle is a boson with spin not equal to 1 and has a mass of about 1.25 giga-electron volts. Although its measured p...roperties are, within the uncertainties of the present data, consistent with those expected of the Higgs boson, more data are needed to elucidate the precise nature of the new particle.
Извор:Science, 2012, 338, 6114, 1569-1575
- Austrian Federal Ministry of Science and Research, Belgian Fonds de la Recherche Scientifique, Fonds voor Wetenschappelijk Onderzoek, Conselho Nacional de Desenvolvimento Cientifico e Technologico(CNPq), Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES), Fundacao de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ), Fundacao de Amparo a Pesquisa do Estado do Sao Paulo (FAPESP), Bulgarian Ministry of Education, Youth, and Science, CERN, Chinese Academy of Sciences, Ministry of Science and Technology, National Natural Science Foundation of China, Colombian funding agency (COLCIENCIAS, Departamento Administrativo de Ciencia, Tecnologia, e Innovacion), Croatian Ministry of Science, Education, and Sport, Research Promotion Foundation, Cyprus, Ministry of Education and Research, Recurrent [SF0690030s09], European Regional Development Fund, Estonia, Academy of Finland, Finnish Ministry of Education and Culture, Helsinki Institute of Physics, Institut National de Physique Nucleaire et de Physique des Particules-CNRS, Commissariat a lEnergie Atomique et aux Energies Alternatives-CEA, France, Bundesministerium fur Bildung und Forschung, Deutsche Forschungsgemeinschaft, Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany, General Secretariat for Research and Technology, Greece, National Scientific Research Foundation, National Office for Research and Technology, Hungary, Department of Atomic Energy and the Department of Science and Technology, India, Institute for Studies in Theoretical Physics and Mathematics, Iran, Science Foundation, Ireland, Istituto Nazionale di Fisica Nucleare, Italy, Korean Ministry of Education, Science and Technology, World Class University program of NRF, Republic of Korea, Lithuanian Academy of Sciences, Centro de Investigacion y Estudios Avanzados, CINVESTAV, Consejo Nacional de Ciencia y Technologia (CONACYT), Secretaria de Educacion P blica (SEP), Universidad Autonoma de San Luis Potosi Fondo de Apoyo a la Investigacion (UASLP-FAI), Ministry of Science and Innovation, New Zealand, Pakistan Atomic Energy Commission, Ministry of Science and Higher Education, National Science Centre, Poland, Fundacao para a Ciencia e a Tecnologia, Portugal, JINR (Joint Institute for Nuclear Research) (Armenia, Belarus, Georgia, Ukraine, Uzbekistan), Ministry of Education and Science of the Russian Federation, Federal Agency of Atomic Energy of the Russian Federation, Russian Academy of Sciences, Russian Foundation for Basic Research, Ministry of Science and Technological Development of Serbia, Secretaria de Estado de Investigacion, Desarrollo, e Innovacion and Programa Consolider-Ingenio, Spain, Eidgenossische Technische Hochschule (ETH) Board, ETH Zurich, Paul Scherrer Institut (PSI), Swiss National Science Foundation, Universitat Zurich, Canton Zurich, State Secretariat for Education and Research (SER), National Science Council, Taipei, Thailand Center of Excellence in Physics, Institute for the Promotion of Teaching Science and Technology of Thailand, National Science and Technology Development Agency of Thailand, Scientific and Technical Research Council of Turkey, Turkish Atomic Energy Authority, Science and Technology Facilities Council, UK, U.S. Department of Energy, NSF