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Inclusive search for squarks and gluinos in pp collisions at √s = 7 TeV

Chatrchyan, S. and Apresyan, A. and Bornheim, A. and Bunn, J. and Chen, Y. and Gataullin, M. and Ma, Y. and Mott, A. and Newman, H. B. and Rogan, C. and Shin, K. and Timciuc, V. and Traczyk, P. and Veverka, J. and Wilkinson, R. and Yang, Y. and Zhu, R. Y. and Spiropulu, M. and Dubinin, M. (2012) Inclusive search for squarks and gluinos in pp collisions at √s = 7 TeV. Physical Review D, 85 (1). Art. No. 012004. ISSN 2470-0010. http://resolver.caltech.edu/CaltechAUTHORS:20120215-134916254

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Abstract

A search is performed for heavy particle pairs produced in √s=7  TeV proton-proton collisions with 35  pb^(-1) of data collected by the CMS experiment at the LHC. The search is sensitive to squarks and gluinos of generic supersymmetry models, provided they are kinematically accessible, with minimal assumptions on properties of the lightest superpartner particle. The kinematic consistency of the selected events is tested against the hypothesis of heavy particle pair production using the dimensionless razor variable R, related to the missing transverse energy E_T^(miss). The new physics signal is characterized by a broad peak in the distribution of M_R, an event-by-event indicator of the heavy particle mass scale. This new approach is complementary to E_T^(miss)-based searches. After background modeling based on data, and background rejection based on R and M_R, no significant excess of events is found beyond the standard model expectations. The results are interpreted in the context of the constrained minimal supersymmetric standard model as well as two simplified supersymmetry models.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1103/PhysRevD.85.012004 DOIArticle
http://link.aps.org/doi/10.1103/PhysRevD.85.012004PublisherArticle
http://prd.aps.org/abstract/PRD/v85/i1/e012004PublisherArticle
http://arxiv.org/abs/arXiv:1107.1279arXivDiscussion paper
ORCID:
AuthorORCID
Chen, Y.0000-0003-2582-6469
Spiropulu, M.0000-0001-8172-7081
Additional Information:© 2012 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Received 7 July 2011; published 11 January 2012. We wish to congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes. This work was supported by the Austrian Federal Ministry of Science and Research; 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; the Research Promotion Foundation, Cyprus; the Estonian Academy of Sciences and NICPB; 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 Office for Research and Technology, 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, Korea; the Lithuanian Academy of Sciences; the Mexican Funding Agencies (CINVESTAV, CONACYT, SEP, and UASLP-FAI); the Ministry of Science and Innovation, New Zealand; the Pakistan Atomic Energy Commission; the State Commission for Scientific Research, Poland; the Fundaça˜o para a Ciência e a Tecnologia, Portugal; JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); the Ministry of Science and Technologies of the Russian Federation, and Russian Ministry of Atomic Energy; the Ministry of Science and Technological Development of Serbia; the Ministerio de Ciencia e Innovaciόn, and Programa Consolider-Ingenio 2010, Spain; the Swiss Funding Agencies (ETH Board, ETH Zurich, PSI, SNF, UniZH, Canton Zurich, and SER); the National Science Council, Taipei; the Scientific and Technical Research Council of Turkey, and Turkish Atomic Energy Authority; the Science and Technology Facilities Council, UK; the U.S. Department of Energy, and the U.S. National Science Foundation. Individuals have received support from the Marie-Curie program and the European Research Council (European Union); the Leventis Foundation; the A. P. Sloan Foundation; the Alexander von Humboldt Foundation; the Associazione per lo Sviluppo Scientifico e Tecnologico del Piemonte (Italy); 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); and the Council of Science and Industrial Research, India.
Group:CMS@Caltech
Funders:
Funding AgencyGrant Number
Austrian Federal Ministry of Science and ResearchUNSPECIFIED
Belgian Fonds de la Recherche ScientifiqueUNSPECIFIED
Fonds voor Wetenschappelijk Onderzoek UNSPECIFIED
CNPq (Brazil)UNSPECIFIED
CAPES (Brazil)UNSPECIFIED
FAPERJ (Brazil)UNSPECIFIED
FAPESP (Brazil)UNSPECIFIED
Bulgarian Ministry of Education and ScienceUNSPECIFIED
CERNUNSPECIFIED
Chinese Academy of SciencesUNSPECIFIED
Ministry of Science and TechnologyUNSPECIFIED
National Natural Science Foundation of ChinaUNSPECIFIED
COLCIENCIAS (Colombia)UNSPECIFIED
Croatian Ministry of Science, Education and Sport UNSPECIFIED
Research Promotion Foundation, Cyprus UNSPECIFIED
Estonian Academy of Sciences and NICPB UNSPECIFIED
Academy of FinlandUNSPECIFIED
Finnish Ministry of Education and Culture, and Helsinki Institute of PhysicsUNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules/CNRSUNSPECIFIED
Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA) France UNSPECIFIED
Bundesministerium für Bildung und Forschung and Deutsche Forschungsgemeinschaft (Germany)UNSPECIFIED
Helmholtz-Gemeinschaft Deutscher Forschungszentren (Germany)UNSPECIFIED
General Secretariat for Research and Technology, Greece UNSPECIFIED
National Scientific Research Foundation UNSPECIFIED
National Office for Research and Technology, Hungary UNSPECIFIED
Department of Atomic Energy and the Department of Science and Technology, IndiaUNSPECIFIED
Institute for Studies in Theoretical Physics and Mathematics (Iran)UNSPECIFIED
Science Foundation IrelandUNSPECIFIED
Istituto Nazionale di Fisica Nucleare (Italy)UNSPECIFIED
Korean Ministry of Education, Science and Technology and the World Class University Program of NRF (KOREA)UNSPECIFIED
Lithuanian Academy of Sciences UNSPECIFIED
CINVESTAV (Mexico)UNSPECIFIED
CONACyT (Mexico)UNSPECIFIED
SEP and UASLP-FAI (Mexico)UNSPECIFIED
Ministry of Science and Innovation, New ZealandUNSPECIFIED
Pakistan Atomic Energy CommissionUNSPECIFIED
State Commission for Scientific Research, Poland UNSPECIFIED
Fundação para a Ciência e a Tecnologia (Portugal)UNSPECIFIED
JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan)UNSPECIFIED
Ministry of Science and Technology of the Russian FederationUNSPECIFIED
Russian Ministry of Atomic Energy UNSPECIFIED
Ministry of Science and Technological Development of SerbiaUNSPECIFIED
Ministerio de Ciencia e Innovacion, and Programa Consolider-Ingenio 2010, Spain UNSPECIFIED
ETH BoardUNSPECIFIED
ETH ZurichUNSPECIFIED
PSIUNSPECIFIED
SNFUNSPECIFIED
UniZH UNSPECIFIED
Canton Zurich and SERUNSPECIFIED
National Science Council (Taipei)UNSPECIFIED
Scientific and Technical Research Council of TurkeyUNSPECIFIED
Turkish Atomic Energy Authority UNSPECIFIED
Science and Technology Facilities Council (UK)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Marie-Curie programme and the European Research Council (European Union)UNSPECIFIED
Leventis Foundation UNSPECIFIED
A.P. Sloan FoundationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Associazione per lo Sviluppo Scientifico e Tecnologico del Piemonte (Italy) UNSPECIFIED
Belgian Federal Science Policy Office UNSPECIFIED
Fonds pour la Formation à la Recherche dans l’índustrie et dans l’Ágriculture (FRIA-Belgium)UNSPECIFIED
Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)UNSPECIFIED
Council of Science and Industrial Research, IndiaUNSPECIFIED
Issue or Number:1
Classification Code:PACS: 13.75.Cs
Record Number:CaltechAUTHORS:20120215-134916254
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120215-134916254
Official Citation:Inclusive search for squarks and gluinos in pp collisions at √s=7  TeV S. Chatrchyan et al. (CMS Collaboration) Published 11 January 2012 (23 pages) 012004
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:29309
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:15 Feb 2012 22:34
Last Modified:16 Sep 2019 22:37

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