Cargando…

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

A wide range of new physics phenomena can produce modifications to the dilepton mass spectra predicted by the standard model (SM) such as quark/lepton compositeness, extra dimensions, and new gauge bosons. The predicted form of these deviations is often either a resonance or an excess in the number...

Descripción completa

Detalles Bibliográficos
Autor principal: Bansal, V
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:http://cds.cern.ch/record/1476538
_version_ 1780925555089080320
author Bansal, V
author_facet Bansal, V
author_sort Bansal, V
collection CERN
description A wide range of new physics phenomena can produce modifications to the dilepton mass spectra predicted by the standard model (SM) such as quark/lepton compositeness, extra dimensions, and new gauge bosons. The predicted form of these deviations is often either a resonance or an excess in the number of events in the spectra at high mass. This work presents a search for contact interactions in the dielectron and dimuon channels using data from proton-proton collisions produced by the LHC at sqrt(s) = 7 TeV and recorded by the ATLAS detector. The data sample, collected in 2011, corresponds to an integrated luminosity of about 1 fb^-1. No significant deviations from the standard model are observed. Using a Bayesian approach, we set 95% CL lower limits on the energy scale of llqq contact interactions.
id cern-1476538
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14765382019-09-30T06:29:59Zhttp://cds.cern.ch/record/1476538engBansal, VSearch for contact interactions in dilepton events from pp collisions at sqrt(s) = 7 TeV with the ATLAS detectorDetectors and Experimental TechniquesA wide range of new physics phenomena can produce modifications to the dilepton mass spectra predicted by the standard model (SM) such as quark/lepton compositeness, extra dimensions, and new gauge bosons. The predicted form of these deviations is often either a resonance or an excess in the number of events in the spectra at high mass. This work presents a search for contact interactions in the dielectron and dimuon channels using data from proton-proton collisions produced by the LHC at sqrt(s) = 7 TeV and recorded by the ATLAS detector. The data sample, collected in 2011, corresponds to an integrated luminosity of about 1 fb^-1. No significant deviations from the standard model are observed. Using a Bayesian approach, we set 95% CL lower limits on the energy scale of llqq contact interactions.ATL-PHYS-PROC-2012-171oai:cds.cern.ch:14765382012-09-06
spellingShingle Detectors and Experimental Techniques
Bansal, V
Search for contact interactions in dilepton events from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
title Search for contact interactions in dilepton events from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
title_full Search for contact interactions in dilepton events from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
title_fullStr Search for contact interactions in dilepton events from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
title_full_unstemmed Search for contact interactions in dilepton events from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
title_short Search for contact interactions in dilepton events from pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
title_sort search for contact interactions in dilepton events from pp collisions at sqrt(s) = 7 tev with the atlas detector
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1476538
work_keys_str_mv AT bansalv searchforcontactinteractionsindileptoneventsfromppcollisionsatsqrts7tevwiththeatlasdetector