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Search for Graviton Resonances of Extra Dimension Models at the LHC
A search for new exotic particles decaying to VZ was performed, where Vis either a W or a Z boson decaying hadronically into two overlapping jets andthe Z decays into a pair of electrons or muons. The analysis uses a data sampleof proton-proton collisions corresponding to an integrated luminosity of...
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Lenguaje: | eng |
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2013
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Acceso en línea: | http://cds.cern.ch/record/1525927 |
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author | De Almeida Dias, Flavia |
author_facet | De Almeida Dias, Flavia |
author_sort | De Almeida Dias, Flavia |
collection | CERN |
description | A search for new exotic particles decaying to VZ was performed, where Vis either a W or a Z boson decaying hadronically into two overlapping jets andthe Z decays into a pair of electrons or muons. The analysis uses a data sampleof proton-proton collisions corresponding to an integrated luminosity of 5 fb−1collected by the Compact Muon Solenoid experiment at the Large Hadron Colliderat a center-of-mass energy of 7 TeV in 2011. No significant excess was observedin the mass distribution of the VZ candidates compared with the backgroundexpectation from Standard Model processes. Therefore, upper limits at the 95%confidence level were set on the product of the cross section times the branchingfraction of hypothetical particles decaying to the VZ final state, as a function ofthe mass, in two benchmark models. In the Randall-Sundrum model for graviton resonances with k / M Pl = 0.05, masses between 750 and 924 GeV/c2 wereexcluded. Sequential Standard Model W bosons with masses between 700 and929 GeV/c2 were also excluded. These are the first results from the LHC on VZsearches using final states with a boosted massive jet and a lepton pair. |
id | cern-1525927 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2013 |
record_format | invenio |
spelling | cern-15259272019-09-30T06:29:59Zhttp://cds.cern.ch/record/1525927engDe Almeida Dias, FlaviaSearch for Graviton Resonances of Extra Dimension Models at the LHCDetectors and Experimental TechniquesA search for new exotic particles decaying to VZ was performed, where Vis either a W or a Z boson decaying hadronically into two overlapping jets andthe Z decays into a pair of electrons or muons. The analysis uses a data sampleof proton-proton collisions corresponding to an integrated luminosity of 5 fb−1collected by the Compact Muon Solenoid experiment at the Large Hadron Colliderat a center-of-mass energy of 7 TeV in 2011. No significant excess was observedin the mass distribution of the VZ candidates compared with the backgroundexpectation from Standard Model processes. Therefore, upper limits at the 95%confidence level were set on the product of the cross section times the branchingfraction of hypothetical particles decaying to the VZ final state, as a function ofthe mass, in two benchmark models. In the Randall-Sundrum model for graviton resonances with k / M Pl = 0.05, masses between 750 and 924 GeV/c2 wereexcluded. Sequential Standard Model W bosons with masses between 700 and929 GeV/c2 were also excluded. These are the first results from the LHC on VZsearches using final states with a boosted massive jet and a lepton pair.CERN-THESIS-2012-276CMS-TS-2013-007oai:cds.cern.ch:15259272013-03-12T08:46:15Z |
spellingShingle | Detectors and Experimental Techniques De Almeida Dias, Flavia Search for Graviton Resonances of Extra Dimension Models at the LHC |
title | Search for Graviton Resonances of Extra Dimension Models at the LHC |
title_full | Search for Graviton Resonances of Extra Dimension Models at the LHC |
title_fullStr | Search for Graviton Resonances of Extra Dimension Models at the LHC |
title_full_unstemmed | Search for Graviton Resonances of Extra Dimension Models at the LHC |
title_short | Search for Graviton Resonances of Extra Dimension Models at the LHC |
title_sort | search for graviton resonances of extra dimension models at the lhc |
topic | Detectors and Experimental Techniques |
url | http://cds.cern.ch/record/1525927 |
work_keys_str_mv | AT dealmeidadiasflavia searchforgravitonresonancesofextradimensionmodelsatthelhc |