Journal article
Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at root s=8 TeV
Physical review : D : particles and fields, Vol.91(1), 012007
01/20/2015
DOI: 10.1103/PhysRevD.91.012007
Abstract
A search is performed for long-lived massive neutral particles decaying to quark-antiquark pairs. The experimental signature is a distinctive topology of a pair of jets, originating at a secondary vertex. Events were collected with the CMS detector at the CERN LHC in proton-proton collisions at a center-of-mass energy of 8 TeV. The data analyzed correspond to an integrated luminosity of 18.5 fb(-1). No significant excess is observed above standard model expectations. Upper limits at 95% confidence level are set on the production cross section of a heavy neutral scalar particle, H, in the mass range of 200 to 1000 GeV, decaying promptly into a pair of long-lived neutral X particles in the mass range of 50 to 350 GeV, each in turn decaying into a quark-antiquark pair. For X with mean proper decay lengths of 0.4 to 200 cm, the upper limits are typically 0.5-200 fb. The results are also interpreted in the context of an R-parity-violating supersymmetric model with long-lived neutralinos decaying into a quark-antiquark pair and a muon. For pair production of squarks that promptly decay to neutralinos with mean proper decay lengths of 2-40 cm, the upper limits on the cross section are typically 0.5-3 fb. The above limits are the most stringent on these channels to date.
Details
- Title: Subtitle
- Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at root s=8 TeV
- Creators
- V. KhachatryanPetar AdžićM. EkmedzicJovan MiloševićV. RekovicMiloš ĐorđevićPredrag MilenovićCMS CollaborationYasar Onel (Contributor) - Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Physical review : D : particles and fields, Vol.91(1), 012007
- DOI
- 10.1103/PhysRevD.91.012007
- ISSN
- 0556-2821
- eISSN
- 2470-0029
- Publisher
- American Physical Society
- Grant note
- DOI: 10.13039/501100003413, name: Bundesministerium für Wissenschaft, Forschung und Wirtschaft; DOI: 10.13039/501100002428, name: Austrian Science Fund; DOI: 10.13039/501100002661, name: Fonds De La Recherche Scientifique - FNRS; DOI: 10.13039/501100003130, name: Fonds Wetenschappelijk Onderzoek; DOI: 10.13039/501100003593, name: Conselho Nacional de Desenvolvimento Científico e Tecnológico; DOI: 10.13039/501100002322, name: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior; DOI: 10.13039/501100001807, name: São Paulo Research Foundation; 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: 10.13039/100007637, name: Departamento Administrativo de Ciencia, Tecnologia e Innovacion; DOI: 10.13039/501100001810, name: Research Promotion Foundation; DOI: 10.13039/501100002341, name: Suomen Akatemia; DOI: 10.13039/501100002347, name: Bundesministerium für Bildung und Forschung; DOI: 10.13039/501100001659, name: Deutsche Forschungsgemeinschaft; DOI: 10.13039/501100003448, name: General Secretariat for Research and Technology; DOI: 10.13039/501100003549, name: Országos Tudományos Kutatási Alapprogramok; DOI: 10.13039/501100001502, name: Department of Atomic Energy, Government of India; DOI: 10.13039/501100001602, name: Science Foundation Ireland; DOI: 10.13039/501100004007, name: Istituto Nazionale di Fisica Nucleare; DOI: 10.13039/501100003621, name: Ministry of Science, ICT and Future Planning; DOI: 10.13039/501100003725, name: National Research Foundation of Korea; DOI: 10.13039/501100002338, name: Ministry of Education of the People’s Republic of China; DOI: 10.13039/501100004386, name: University of Malaya; DOI: 10.13039/501100003141, name: Consejo Nacional de Ciencia y Tecnología; DOI: 10.13039/501100003524, name: Ministry of Business, Innovation and Employment; DOI: 10.13039/501100001871, name: Fundação para a Ciência e a Tecnologia; DOI: 10.13039/501100003822, name: Joint Institute for Nuclear Research; DOI: 10.13039/501100002674, name: Russian Academy of Sciences; DOI: 10.13039/501100002261, name: Russian Foundation for Basic Research; DOI: 10.13039/501100004564, name: Ministry of Education, Science and Technological Development of Serbia; DOI: 10.13039/501100004192, name: National Science and Technology Development Agency; 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: 10.13039/100000001, name: National Science Foundation; DOI: 10.13039/100000879, name: Alfred P. Sloan Foundation; DOI: 10.13039/501100004117, name: A.G. Leventis Foundation; DOI: 10.13039/100005156, name: Alexander von Humboldt-Stiftung; DOI: 10.13039/501100003134, name: Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture; DOI: 10.13039/501100003132, name: Agentschap voor Innovatie door Wetenschap en Technologie; DOI: 10.13039/501100001823, name: Ministry of Education, Youth and Sports; DOI: 10.13039/501100001412, name: Council of Scientific and Industrial Research; DOI: 10.13039/501100001870, name: Foundation For Polish Science; DOI: 10.13039/100007388, name: Compagnia di San Paolo; DOI: 10.13039/501100003407, name: Ministero dell’Istruzione, dell’Università e della Ricerca, award: 20108T4XTM; DOI: 10.13039/501100004488, name: Hrvatska Zaklada za Znanost; DOI: 10.13039/501100003415, name: Ministarstvo Obrazovanja, Znanosti i Sporta; DOI: 10.13039/501100003510, name: Haridus ja-Teadus Ministerium; DOI: 10.13039/501100002301, name: Estonian Research Council; DOI: 10.13039/501100001409, name: Department of Science and Technology, Ministry of Science and Technology; DOI: 10.13039/501100004442, name: Narodowym Centrum Nauki; DOI: 10.13039/501100003330, name: Secretaría de Estado de Investigacion, Desarrollo e Innovacion; name: Fundação de Amparo à Pesquisa do Estado de Rio de Janeiro; name: Bulgarian Ministry of Education and Science; DOI: 10.13039/100012470, name: CERN; DOI: 10.13039/501100008530, name: European Regional Development Fund; name: Finnish Ministry of Education and Culture; name: Helsinki Institute of Physics; name: Commissariat à l’Énergie Atomique et aux Énergies Alternatives; name: Institut National de Physique Nucléaire et de Physiqe des Particules; name: Helmholtz-Gemeinschaft Deutscher Forschungszentren; name: National Innovation Office Hungary; DOI: 10.13039/501100008523, name: Lithuanian Academy of Sciences; DOI: 10.13039/501100008688, name: Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional; DOI: 10.13039/100010096, name: Secretaría de Educación Pública; DOI: 10.13039/501100005324, name: Universidad Autónoma de San Luis Potosí; name: Atomic Energy Commission; name: Ministry of Science and Higher Education; name: Swiss Funding Agencies; name: Ministry of Science and Technology (Taipei); 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 (Thailand); name: TUBITAK; DOI: 10.13039/100010440, name: TAEK; name: State Fund for Fundamental Researches (Ukraine); name: Institute for Studies in Theoretical Physics and Mathematics
- Language
- English
- Date published
- 01/20/2015
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428829102771
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