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Search for supersymmetry in events with a lepton, a photon, and large missing transverse energy 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. and Boos, E. (2011) Search for supersymmetry in events with a lepton, a photon, and large missing transverse energy in pp collisions at √s = 7 TeV. Journal of High Energy Physics, 2011 (6). Art. No. 093. ISSN 1126-6708. http://resolver.caltech.edu/CaltechAUTHORS:20110927-102057509

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Abstract

A search is performed for an excess of events, over the standard model expectations, with a photon, a lepton, and large missing transverse energy in pp collisions at √s=7 TeV. Such events are expected in many new physics models, in particular a supersymmetric theory that is broken via a gauge-mediated mechanism, when the lightest charged and neutral gauginos are mass degenerate. The data sample used in this search corresponds to an integrated luminosity of 35 pb^(-1) collected with the CMS detector at the LHC. No evidence of such an excess above the standard model backgrounds, dominated by W production, is found. The results are presented as 95% confidence level upper limits on the cross section for a benchmark gauge-mediated scenario, and are then converted into exclusion limits on the squark, gluino, and wino masses.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1007/JHEP06(2011)093 DOIArticle
http://www.springerlink.com/content/k71jw14103306nj8/PublisherArticle
https://arxiv.org/abs/1105.3152arXivDiscussion Paper
ORCID:
AuthorORCID
Newman, H. B.0000-0003-0964-1480
Zhu, R. Y.0000-0003-3091-7461
Spiropulu, M.0000-0001-8172-7081
Additional Information:© 2011 CERN, for the benefit of the CMS collaboration. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. Received: May 8, 2011. Accepted: June 3, 2011. Published: June 21, 2011. We thank David Shih and Joshua Ruderman for stimulating discussions, support, and help with the production of the SUSY Monte Carlo samples. 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 sta at CERN and other CMS institutes, and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA).
Group:CMS@Caltech
Funders:
Funding AgencyGrant Number
FMSR (Austria)UNSPECIFIED
Fonds National de la Recherche Scientifique (FNRS)UNSPECIFIED
Fonds Wetenschappelijk Onderzoek (FWO)UNSPECIFIED
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNSPECIFIED
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)UNSPECIFIED
Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)UNSPECIFIED
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)UNSPECIFIED
Ministry of Education and Science (Bulgaria)UNSPECIFIED
CERNUNSPECIFIED
Chinese Academy of SciencesUNSPECIFIED
Ministry of Science and Technology (China)UNSPECIFIED
National Natural Science Foundation of ChinaUNSPECIFIED
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)UNSPECIFIED
Ministry of Science, Education and Sport (Croatia)UNSPECIFIED
Research Promotion Foundation (Cyprus)UNSPECIFIED
Academy of Sciences (Estonia)UNSPECIFIED
National Institute of Chemical Physics and Biophysics (NICPB)UNSPECIFIED
Academy of FinlandUNSPECIFIED
Ministry of Education and Culture (Finland)UNSPECIFIED
Helsinki Institute of Physics (HIP)UNSPECIFIED
Commissariat a l'Energie Atomique (CEA)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Helmholtz-Gemeinschaft Deutscher Forschungszentren (HGF)UNSPECIFIED
General Secretariat for Research and Technology (GSRT)UNSPECIFIED
Hungarian Scientific Research Fund (OTKA)UNSPECIFIED
National Research, Development and Innovation Office (Hungary)UNSPECIFIED
Department of Atomic Energy (India)UNSPECIFIED
Department of Science and Technology (India)UNSPECIFIED
Institute for Research in Fundamental Sciences (Iran)UNSPECIFIED
Science Foundation, IrelandUNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
National Research Foundation of KoreaUNSPECIFIED
World Class University (WCU)UNSPECIFIED
Lithuanian Academy of SciencesUNSPECIFIED
Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV)UNSPECIFIED
Consejo Nacional de Ciencia y Tecnología (CONACYT)UNSPECIFIED
Secretaría de Educación Pública (SEP)UNSPECIFIED
Universidad Autónoma de San Luis Potosí Inicio-Facultad de Ingeniería (UASLP-FAI)UNSPECIFIED
Atomic Energy Commission (Pakistan)UNSPECIFIED
SCSR (Poland)UNSPECIFIED
Fundação para a Ciência e Tecnologia (FCT)UNSPECIFIED
Joint Institute for Nuclear Research (JINR)UNSPECIFIED
MST (Russia)UNSPECIFIED
MAE (Russia)UNSPECIFIED
Ministry of Education, Science and Technological Development (Serbia)UNSPECIFIED
Ministerio de Ciencia e Innovación (MCINN)UNSPECIFIED
Centro Nacional de Física de Partículas, Astropartículas y Nuclear (CPAN)UNSPECIFIED
Swiss Funding AgenciesUNSPECIFIED
National Science Council (Taipei)UNSPECIFIED
Türkiye Bilimsel ve Teknolojik Araştırma Kurumu (TÜBİTAK)UNSPECIFIED
Türkiye Atom Enerjisi Kurumu (TAEK)UNSPECIFIED
Science and Technology Facilities Council (STFC)UNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Record Number:CaltechAUTHORS:20110927-102057509
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20110927-102057509
Official Citation:Search for supersymmetry in events with a lepton, a photon, and large missing transverse energy in pp collisions at s=7 TeV The CMS collaboration, S. Chatrchyan, V. Khachatryan, A. M. Sirunyan and A. Tumasyan, et al.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:25444
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:27 Sep 2011 17:58
Last Modified:20 Dec 2017 18:18

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