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

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 √s = 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−...

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Detalles Bibliográficos
Autores principales: Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín F., The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Ciencias Exactas
contact interactions
dilepton events
pp collisions
Física
ATLAS detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/77518
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-77518
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
contact interactions
dilepton events
pp collisions
Física
ATLAS detector
spellingShingle Ciencias Exactas
contact interactions
dilepton events
pp collisions
Física
ATLAS detector
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
Search for contact interactions in dilepton events from pp collisions at √s = 7 TeV with the ATLAS detector
topic_facet Ciencias Exactas
contact interactions
dilepton events
pp collisions
Física
ATLAS detector
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 √s = 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−1 in the e+e− and μ+μ− channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/Λ2, the following 95% CL lower limits are placed on the energy scale of <math xmlns="http://www.w3.org/1998/Math/MathML"><mi is="true">ℓ</mi><mi is="true">ℓ</mi><mi is="true">q</mi><mi is="true">q</mi></math> contact interactions: Λ− > 10.1 TeV (Λ+ > 9.4 TeV) in the electron channel and Λ− > 8.0 TeV (Λ+ > 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/Λ4.
format Articulo
Articulo
author Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author_facet Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author_sort Anduaga, Xabier Sebastián
title Search for contact interactions in dilepton events from pp collisions at √s = 7 TeV with the ATLAS detector
title_short Search for contact interactions in dilepton events from pp collisions at √s = 7 TeV with the ATLAS detector
title_full Search for contact interactions in dilepton events from pp collisions at √s = 7 TeV with the ATLAS detector
title_fullStr Search for contact interactions in dilepton events from pp collisions at √s = 7 TeV with the ATLAS detector
title_full_unstemmed Search for contact interactions in dilepton events from pp collisions at √s = 7 TeV with the ATLAS detector
title_sort search for contact interactions in dilepton events from pp collisions at √s = 7 tev with the atlas detector
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/77518
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