Search for pair production of a new b′ quark that decays into a Z boson and a bottom quark with the ATLAS detector

A search is reported for the pair production of a new quark b′ with at least one b′ decaying to a Z boson and a bottom quark. The data, corresponding to 2.0fb-1 of integrated luminosity, were collected from pp collisions at √s=7TeV with the ATLAS detector at the CERN Large Hadron Collider. Using eve...

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Detalles Bibliográficos
Autores principales: Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín F.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Física
quark
Z boson
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84157
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-84157
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
quark
Z boson
spellingShingle Física
quark
Z boson
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
Search for pair production of a new b′ quark that decays into a Z boson and a bottom quark with the ATLAS detector
topic_facet Física
quark
Z boson
description A search is reported for the pair production of a new quark b′ with at least one b′ decaying to a Z boson and a bottom quark. The data, corresponding to 2.0fb-1 of integrated luminosity, were collected from pp collisions at √s=7TeV with the ATLAS detector at the CERN Large Hadron Collider. Using events with a b-tagged jet and a Z boson reconstructed from opposite-charge electrons, the mass distribution of large transverse momentum b′ candidates is tested for an enhancement. No evidence for a b′ signal is detected in the observed mass distribution, resulting in the exclusion at a 95% confidence level of b′ quarks with masses m b′<400GeV that decay entirely via b′→Z+b. In the case of a vectorlike singlet b′ mixing solely with the third standard model generation, masses mb′<358GeV are excluded.
format Articulo
Articulo
author Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
author_facet Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
author_sort Anduaga, Xabier Sebastián
title Search for pair production of a new b′ quark that decays into a Z boson and a bottom quark with the ATLAS detector
title_short Search for pair production of a new b′ quark that decays into a Z boson and a bottom quark with the ATLAS detector
title_full Search for pair production of a new b′ quark that decays into a Z boson and a bottom quark with the ATLAS detector
title_fullStr Search for pair production of a new b′ quark that decays into a Z boson and a bottom quark with the ATLAS detector
title_full_unstemmed Search for pair production of a new b′ quark that decays into a Z boson and a bottom quark with the ATLAS detector
title_sort search for pair production of a new b′ quark that decays into a z boson and a bottom quark with the atlas detector
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/84157
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AT dovamariateresa searchforpairproductionofanewbquarkthatdecaysintoazbosonandabottomquarkwiththeatlasdetector
AT monticellifernandogabriel searchforpairproductionofanewbquarkthatdecaysintoazbosonandabottomquarkwiththeatlasdetector
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