Search for supersymmetry in events with a lepton, a photon, and large missing transverse energy in pp collisions at √ 8 = 7 TeV

The CMS Collaboration

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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√ = 7TeV. 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% con dence 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.

Original languageEnglish
Article number93
JournalJournal of High Energy Physics
Volume2011
Issue number6
DOIs
Publication statusPublished - 2011

Bibliographical note

Funding Information:
The following grant information was disclosed by the authors: The VEGA Scientific Agency: 1/0164/19, 1/0533/21. The APVV grant agency of the Slovak Republic: APVV-16-0121, APVV-20-0079. The UK grant of the Comenius University in Bratislava: UK/56/2019, UK/100/2020, UK/75/2021. The Institute of Geology of the Czech Academy of Sciences: RVO67985831. The NSP (National Scholarship program of Slovak Republic for the Support of Mobility of University Researchers): 33758. The Specific research project at the Faculty of Science at Masaryk University: MUNI/1263/2020. The Ministerio de Ciencia e Innovación and the Agencia Estatal de Investigación: I+D+I PID2020-117289GB-I00 funded by MCIN/AEI/10.13039/501100011033/. The Operational Programme Research, Development and Education –Project ‘Postdoc@MUNI’: No. CZ.02.2.69/0.0/0.0/16_027/0008360.

Funding Information:
The research reported in this work has been funded by: the VEGA Scientific Agency (Project No. 1/0164/19; Isaac Bonilla-Salomón and; Martin Sabol; and Project No. 1/0533/21; Martin Sabol); the APVV grant agency of the Slovak Republic (Project No. APVV-16-0121 and APVV-20-0079; Isaac Bonilla-Salomón; Martin Sabol); the UK grant of the Comenius University in Bratislava (Project No. UK/56/2019, UK/100/2020 and UK/75/2021; Isaac Bonilla-Salomón); the institutional support RVO67985831 of the Institute of Geology of the Czech Academy of Sciences (Stanislav Čermák); the NSP (National Scholarship program of Slovak Republic for the Support of Mobility of University Researchers (ID 33758 to Sílvia Jovells-Vaqué); the Specific research project at the Faculty of Science at Masaryk University, Brno (MUNI/1263/2020; Martin Ivanov). Àngel H. Luján also received funding from the Ministerio de Ciencia e Innovación and the Agencia Estatal de Investigación (Grant I+D+I PID2020-117289GB-I00 funded by MCIN/AEI/10.13039/501100011033/), the Operational Programme Research, Development and Education –Project ‘Postdoc@MUNI’ (No. CZ.02.2.69/0.0/0.0/16_027/0008360), the Generalitat de Catalunya (CERCA Program and 2017 SGR 116) and the ‘Programa Postdoctoral Beatriu de Pinós de la Secretaria d’Universitats i Recerca del Departament d’Empresa i Coneixement de la Generalitat de Catalunya’ (2019 BP 00154). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

Keywords

  • Hadron
  • Scattering

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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