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Determining the spin of supersymmetric particles at the LHC using lepton charge asymmetry

If signals suggesting supersymmetry (SUSY) are discovered at the LHC then it will be vital to measure the spins of the new particles to demonstrate that they are indeed the predicted super-partners. A method is discussed by which the spins of some of the SUSY particles can be investigated. Angular d...

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Detalles Bibliográficos
Autor principal: Barr, A J
Lenguaje:eng
Publicado: 2004
Materias:
Acceso en línea:http://cds.cern.ch/record/739337
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author Barr, A J
author_facet Barr, A J
author_sort Barr, A J
collection CERN
description If signals suggesting supersymmetry (SUSY) are discovered at the LHC then it will be vital to measure the spins of the new particles to demonstrate that they are indeed the predicted super-partners. A method is discussed by which the spins of some of the SUSY particles can be investigated. Angular distributions in sparticle decays lead to charge asymmetry in lepton-jet invariant mass distributions. The size of the asymmetry is proportional to the primary production asymmetry between squarks and anti-squarks. Monte Carlo simulations are performed for a particular mSUGRA model point at the LHC. The resultant asymmetry distributions are consistent with a spin-0 slepton and a spin-half neutralino-2, but are not consistent with both particles being scalars.
id cern-739337
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2004
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spelling cern-7393372019-09-30T06:29:59Zhttp://cds.cern.ch/record/739337engBarr, A JDetermining the spin of supersymmetric particles at the LHC using lepton charge asymmetryDetectors and Experimental TechniquesIf signals suggesting supersymmetry (SUSY) are discovered at the LHC then it will be vital to measure the spins of the new particles to demonstrate that they are indeed the predicted super-partners. A method is discussed by which the spins of some of the SUSY particles can be investigated. Angular distributions in sparticle decays lead to charge asymmetry in lepton-jet invariant mass distributions. The size of the asymmetry is proportional to the primary production asymmetry between squarks and anti-squarks. Monte Carlo simulations are performed for a particular mSUGRA model point at the LHC. The resultant asymmetry distributions are consistent with a spin-0 slepton and a spin-half neutralino-2, but are not consistent with both particles being scalars.ATL-PHYS-2004-017oai:cds.cern.ch:7393372004-06-04
spellingShingle Detectors and Experimental Techniques
Barr, A J
Determining the spin of supersymmetric particles at the LHC using lepton charge asymmetry
title Determining the spin of supersymmetric particles at the LHC using lepton charge asymmetry
title_full Determining the spin of supersymmetric particles at the LHC using lepton charge asymmetry
title_fullStr Determining the spin of supersymmetric particles at the LHC using lepton charge asymmetry
title_full_unstemmed Determining the spin of supersymmetric particles at the LHC using lepton charge asymmetry
title_short Determining the spin of supersymmetric particles at the LHC using lepton charge asymmetry
title_sort determining the spin of supersymmetric particles at the lhc using lepton charge asymmetry
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/739337
work_keys_str_mv AT barraj determiningthespinofsupersymmetricparticlesatthelhcusingleptonchargeasymmetry