Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector

Detalhes bibliográficos
Autor(a) principal: Onofre, A.
Data de Publicação: 2012
Outros Autores: Castro, Nuno Filipe Silva Fernandes, ATLAS Collaboration
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/48776
Resumo: This Letter presents a search for contact interactions in the dielectron and dimuon channels using data from proton–proton collisions produced by the LHC at View the MathML sources=7 TeV and recorded by the ATLAS detector. The data sample, collected in 2011, corresponds to an integrated luminosity of 1.08 and 1.21 fb−11.21 fb−1 in the e+e−e+e− and μ+μ−μ+μ− channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/Λ21/Λ2, the following 95% CL lower limits are placed on the energy scale of ℓℓqqℓℓqq contact interactions: Λ−>10.1 TeVΛ−>10.1 TeV (Λ+>9.4 TeVΛ+>9.4 TeV) in the electron channel and Λ−>8.0 TeVΛ−>8.0 TeV (Λ+>7.0 TeVΛ+>7.0 TeV) in the muon channel for constructive (destructive) interference in the left–left isoscalar contact interaction model. Limits are also provided for a prior flat in 1/Λ41/Λ4.
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spelling Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detectorCiências Naturais::Ciências FísicasScience & TechnologyThis Letter presents a search for contact interactions in the dielectron and dimuon channels using data from proton–proton collisions produced by the LHC at View the MathML sources=7 TeV and recorded by the ATLAS detector. The data sample, collected in 2011, corresponds to an integrated luminosity of 1.08 and 1.21 fb−11.21 fb−1 in the e+e−e+e− and μ+μ−μ+μ− channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/Λ21/Λ2, the following 95% CL lower limits are placed on the energy scale of ℓℓqqℓℓqq contact interactions: Λ−>10.1 TeVΛ−>10.1 TeV (Λ+>9.4 TeVΛ+>9.4 TeV) in the electron channel and Λ−>8.0 TeVΛ−>8.0 TeV (Λ+>7.0 TeVΛ+>7.0 TeV) in the muon channel for constructive (destructive) interference in the left–left isoscalar contact interaction model. Limits are also provided for a prior flat in 1/Λ41/Λ4.We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; ARTEMIS, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNAS, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MERYS (MECTS), Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MVZT, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States.info:eu-repo/semantics/publishedVersionElsevierUniversidade do MinhoOnofre, A.Castro, Nuno Filipe Silva FernandesATLAS Collaboration20122012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/48776engAad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., . . . Collaboration, A. (2012). Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector. Physics Letters B, 712(1-2), 40-58. doi: 10.1016/j.physletb.2012.04.0260370-26931873-244510.1016/j.physletb.2012.04.026http://www.sciencedirect.com/science/article/pii/S0370269312004297info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:00:44Zoai:repositorium.sdum.uminho.pt:1822/48776Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:50:35.972669Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector
title Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector
spellingShingle Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector
Onofre, A.
Ciências Naturais::Ciências Físicas
Science & Technology
title_short Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector
title_full Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector
title_fullStr Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector
title_full_unstemmed Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector
title_sort Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector
author Onofre, A.
author_facet Onofre, A.
Castro, Nuno Filipe Silva Fernandes
ATLAS Collaboration
author_role author
author2 Castro, Nuno Filipe Silva Fernandes
ATLAS Collaboration
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Onofre, A.
Castro, Nuno Filipe Silva Fernandes
ATLAS Collaboration
dc.subject.por.fl_str_mv Ciências Naturais::Ciências Físicas
Science & Technology
topic Ciências Naturais::Ciências Físicas
Science & Technology
description This Letter presents a search for contact interactions in the dielectron and dimuon channels using data from proton–proton collisions produced by the LHC at View the MathML sources=7 TeV and recorded by the ATLAS detector. The data sample, collected in 2011, corresponds to an integrated luminosity of 1.08 and 1.21 fb−11.21 fb−1 in the e+e−e+e− and μ+μ−μ+μ− channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/Λ21/Λ2, the following 95% CL lower limits are placed on the energy scale of ℓℓqqℓℓqq contact interactions: Λ−>10.1 TeVΛ−>10.1 TeV (Λ+>9.4 TeVΛ+>9.4 TeV) in the electron channel and Λ−>8.0 TeVΛ−>8.0 TeV (Λ+>7.0 TeVΛ+>7.0 TeV) in the muon channel for constructive (destructive) interference in the left–left isoscalar contact interaction model. Limits are also provided for a prior flat in 1/Λ41/Λ4.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/48776
url http://hdl.handle.net/1822/48776
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Aad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., . . . Collaboration, A. (2012). Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector. Physics Letters B, 712(1-2), 40-58. doi: 10.1016/j.physletb.2012.04.026
0370-2693
1873-2445
10.1016/j.physletb.2012.04.026
http://www.sciencedirect.com/science/article/pii/S0370269312004297
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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