Published October 2014
| Version Submitted + Published
Journal Article
Open
Observation of the diphoton decay of the Higgs boson and measurement of its properties
Abstract
Observation of the diphoton decay mode of the recently discovered Higgs boson and measurement of some of its properties are reported. The analysis uses the entire dataset collected by the CMS experiment in proton-proton collisions during the 2011 and 2012 LHC running periods. The data samples correspond to integrated luminosities of 5.1 fb^(-1) at √s=7TeV and 19.7 fb^(-1) at 8 TeV . A clear signal is observed in the diphoton channel at a mass close to 125 GeV with a local significance of 5.7σ , where a significance of 5.2σ is expected for the standard model Higgs boson. The mass is measured to be 124.70±0.34GeV=124.70±0.31(stat)±0.15(syst)GeV , and the best-fit signal strength relative to the standard model prediction is 1.14^(+0.26)_(−0.23)=1.14±0.21(stat) ^(+0.09)_(−0.05)(syst) ^(+0.13)_(−0.09)(theo) . Additional measurements include the signal strength modifiers associated with different production mechanisms, and hypothesis tests between spin-0 and spin-2 models.
Additional Information
© 2014 CERN for the benefit of the CMS collaboration. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. Funded by SCOAP3 / License Version CC BY 4.0. Received: 2 July 2014. Accepted: 12 September 2014. Published online: 15 October 2014. We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centres and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: the Austrian Federal Ministry of Science, Research and Economy and the Austrian Science Fund; the Belgian Fonds de la Recherche Scientifique, and Fonds voor Wetenschappelijk Onderzoek; the Brazilian Funding Agencies (CNPq, CAPES, FAPERJ, and FAPESP); the Bulgarian Ministry of Education and Science; CERN; the Chinese Academy of Sciences, Ministry of Science and Technology, and National Natural Science Foundation of China; the Colombian Funding Agency (COLCIENCIAS); the Croatian Ministry of Science, Education and Sport, and the Croatian Science Foundation; the Research Promotion Foundation, Cyprus; the Ministry of Education and Research, Estonian Research Council via IUT23-4 and IUT23-6 and European Regional Development Fund, Estonia; the Academy of Finland, Finnish Ministry of Education and Culture, and Helsinki Institute of Physics; the Institut National de Physique Nucléaire et de Physique des Particules / CNRS, and Commissariat à l'Énergie Atomique et aux Énergies Alternatives / CEA, France; the Bundesministerium für Bildung und Forschung, Deutsche Forschungsgemeinschaft, and Helmholtz-Gemeinschaft Deutscher Forschungszentren, Germany; the General Secretariat for Research and Technology, Greece; the National Scientific Research Foundation, and National Innovation Office, Hungary; the Department of Atomic Energy and the Department of Science and Technology, India; the Institute for Studies in Theoretical Physics and Mathematics, Iran; the Science Foundation, Ireland; the Istituto Nazionale di Fisica Nucleare, Italy; the Korean Ministry of Education, Science and Technology and the World Class University program of NRF, Republic of Korea; the Lithuanian Academy of Sciences; the Ministry of Education, and University of Malaya (Malaysia); the Mexican Funding Agencies (CINVESTAV, CONACYT, SEP, and UASLP-FAI); the Ministry of Business, Innovation and Employment, New Zealand; the Pakistan Atomic Energy Commission; the Ministry of Science and Higher Education and the National Science Centre, Poland; the Fundação para a Ciência e a Tecnologia, Portugal; JINR, Dubna; the Ministry of Education and Science of the Russian Federation, the Federal Agency of Atomic Energy of the Russian Federation, Russian Academy of Sciences, and the Russian Foundation for Basic Research; the Ministry of Education, Science and Technological Development of Serbia; the Secretaría de Estado de Investigación, Desarrollo e Innovación and Programa Consolider-Ingenio 2010, Spain; the Swiss Funding Agencies (ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER); the Ministry of Science and Technology, Taipei; the Thailand Center of Excellence in Physics, the Institute for the Promotion of Teaching Science and Technology of Thailand, Special Task Force for Activating Research and the National Science and Technology Development Agency of Thailand; the Scientific and Technical Research Council of Turkey, and Turkish Atomic Energy Authority; the National Academy of Sciences of Ukraine, and State Fund for Fundamental Researches, Ukraine; the Science and Technology Facilities Council, UK; the US Department of Energy, and the US National Science Foundation. Individuals have received support from the Marie- Curie programme and the European Research Council and EPLANET (European Union); the Leventis Foundation; the A. P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Council of Science and Industrial Research, India; the HOMING PLUS programme of Foundation for Polish Science, cofinanced from European Union, Regional Development Fund; the Compagnia di San Paolo (Torino); and the Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF.Attached Files
Published - art_10.1140_epjc_s10052-014-3076-z.pdf
Submitted - 1407.0558v2.pdf
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Additional details
Identifiers
- Eprint ID
- 53462
- Resolver ID
- CaltechAUTHORS:20150109-100204993
Related works
- Describes
- http://arxiv.org/abs/1407.0558 (URL)
Funding
- Austrian Federal Ministry of Science Research and Economy and the Austrian Science Fund
- Belgian Fonds de la Recherche Scientifique and Fonds voor Wetenschappelijk Orderzoek
- CNPq, CAPES, FAPERJ, and FAPESP (Brazil)
- Bulgarian Ministry of Education and Science
- CERN
- Chinese Academy of Sciences, Ministry of Science and Technology, and National Natural Science Foundation of China
- COLCIENCIAS (Colombia)
- Croatian Ministry of Science, Education and Sport
- Croatian Science Foundation
- Research Promotion Foundation, Cyprus
- Ministry of Education and Research, Estonian Research Council
- IUT23-4
- Ministry of Education and Research, Estonian Research Council
- IUT23-6
- European Regional Development Fund, Estonia
- Academy of Finland
- Finnish Ministry of Education and Culture, and Helsinki Institute of Physics
- Institut National de Physique Nucléaire et de Physique des Particules / CNRS, and Commissariat à l'Énergie Atomique et aux Énergies Alternatives / CEA, France
- Bundesministerium für Bildung und Forschung (Germany)
- Helmholtz-Gemeinschaft Deutscher Forschungszentren (Germany)
- General Secretariat for Research and Technology, Greece
- National Scientific Research Foundation and National Innovation Office, 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 (INFN)
- Korean Ministry of Education, Science and Technology and the World Class University Program of NRF
- Lithuanian Academy of Sciences
- Ministry of Education, and University of Malaya (Malaysia)
- CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico)
- Ministry of Business, Innovation and Employment, New Zealand
- Pakistan Atomic Energy Commission
- Ministry of Science and Higher Education and the National Science Centre, Poland
- Fundação para a Ciência e a Tecnologia (FCT)
- JINR (Dubna)
- 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 Education, Science and Technological Development of Serbia
- Secretaría de Estado de Investigación, Desarrollo e Innovación and Programa Consolider-Ingenio 2010, Spain
- ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER
- Ministry of Science and Technology, Taipei
- Thailand center of Excellence in Physics
- Institute for the Promotion of Teaching Science and Technology of Thailand
- Special Task Force for Activating Research and the National Science and Technology Development Agency of Thailand
- Scientific and Technical Research Council of Turkey
- Turkish Atomic Energy Authority
- National Academy of Sciences of Ukraine
- State Fund for Fundamental Researches, Ukraine
- Science and Technology Facilities Council (STFC)
- Department of Energy (DOE)
- NSF
- Marie-Curie programme and the European Research Council and EPLANET (European Union)
- Leventis Foundation
- Alfred P. Sloan Foundation
- Alexander von Humboldt Foundation
- Belgian Federal Science Policy Office
- Fonds pour la Formation à la Recherche dans l'índustrie et dans l'Ágriculture (FRIA-Belgium)
- Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
- Ministry of Education, Youth and Sports (MEYS) of the Czech Republic
- Council of Science and Industrial Research, India
- HOMING PLUS programme of Foundation for Polish Science cofinanced from European Union
- Regional Development Fund
- Compagnia di San Paolo (Torino)
- Thalis and Aristeia programmes cofinanced by EU-ESF
- Greek NSRF
- SCOAP3
- Deutsche Forschungsgemeinschaft (DFG)
Dates
- Created
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2015-01-09Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field