Pair production of heavy Q=2/3 singlets at LHC

We examine the LHC discovery potential for new Q=2/3 quark singlets T in the process gg,qq -> T Tbar -> W+ b W- bbar, with one W boson decaying hadronically and the other one leptonically. A particle-level simulation of this signal and its main backgrounds is performed, showing that heavy quar...

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Detalles Bibliográficos
Autor principal: Aguilar-Saavedra, J A
Lenguaje:eng
Publicado: 2005
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2005.12.013
http://cds.cern.ch/record/844596
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author Aguilar-Saavedra, J A
author_facet Aguilar-Saavedra, J A
author_sort Aguilar-Saavedra, J A
collection CERN
description We examine the LHC discovery potential for new Q=2/3 quark singlets T in the process gg,qq -> T Tbar -> W+ b W- bbar, with one W boson decaying hadronically and the other one leptonically. A particle-level simulation of this signal and its main backgrounds is performed, showing that heavy quarks with masses of 500 GeV or lighter can be discovered at the 5 sigma level after a few months of running, when an integrated luminosity of 3 fb^-1 is collected. With a luminosity of 100 fb^-1, this process can signal the presence of heavy quarks with masses up to approximately 1 TeV. Finally, we discuss the complementarity among T Tbar, Tj production and indirect constraints from precise electroweak data in order to discover a new quark or set bounds on its mass.
id cern-844596
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2005
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spelling cern-8445962019-09-30T06:29:59Zdoi:10.1016/j.physletb.2005.12.013http://cds.cern.ch/record/844596engAguilar-Saavedra, J APair production of heavy Q=2/3 singlets at LHCParticle Physics - PhenomenologyWe examine the LHC discovery potential for new Q=2/3 quark singlets T in the process gg,qq -> T Tbar -> W+ b W- bbar, with one W boson decaying hadronically and the other one leptonically. A particle-level simulation of this signal and its main backgrounds is performed, showing that heavy quarks with masses of 500 GeV or lighter can be discovered at the 5 sigma level after a few months of running, when an integrated luminosity of 3 fb^-1 is collected. With a luminosity of 100 fb^-1, this process can signal the presence of heavy quarks with masses up to approximately 1 TeV. Finally, we discuss the complementarity among T Tbar, Tj production and indirect constraints from precise electroweak data in order to discover a new quark or set bounds on its mass.hep-ph/0506187oai:cds.cern.ch:8445962005-06-20
spellingShingle Particle Physics - Phenomenology
Aguilar-Saavedra, J A
Pair production of heavy Q=2/3 singlets at LHC
title Pair production of heavy Q=2/3 singlets at LHC
title_full Pair production of heavy Q=2/3 singlets at LHC
title_fullStr Pair production of heavy Q=2/3 singlets at LHC
title_full_unstemmed Pair production of heavy Q=2/3 singlets at LHC
title_short Pair production of heavy Q=2/3 singlets at LHC
title_sort pair production of heavy q=2/3 singlets at lhc
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.physletb.2005.12.013
http://cds.cern.ch/record/844596
work_keys_str_mv AT aguilarsaavedraja pairproductionofheavyq23singletsatlhc

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