Search for W' → tb→ qqbb decays in pp collisions at √s = 8 TeV with the ATLAS detector

A search for a massive W' gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The dataset was taken at a centre-of-mass energy of √s = 8 TeV and corresponds to 20.3 fb−1 of integrated luminosity. This analysis is done in the h...

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Detalles Bibliográficos
Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Exactas
Física
W' gauge boson
top quark
bottom quark
ATLAS detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79211
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79211
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
Física
W' gauge boson
top quark
bottom quark
ATLAS detector
spellingShingle Ciencias Exactas
Física
W' gauge boson
top quark
bottom quark
ATLAS detector
Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Search for W' → tb→ qqbb decays in pp collisions at √s = 8 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
W' gauge boson
top quark
bottom quark
ATLAS detector
description A search for a massive W' gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in pp collisions at the LHC. The dataset was taken at a centre-of-mass energy of √s = 8 TeV and corresponds to 20.3 fb−1 of integrated luminosity. This analysis is done in the hadronic decay mode of the top quark, where novel jet substructure techniques are used to identify jets from high-momentum top quarks. This allows for a search for high-mass W' bosons in the range 1.5–3.0 TeV. b-tagging is used to identify jets originating from b-quarks. The data are consistent with Standard Model background-only expectations, and upper limits at 95% confidence level are set on the W' → tb cross section times branching ratio ranging from 0.16 pb to 0.33 pb for left-handed W' bosons, and ranging from 0.10 pb to 0.21 pb for W' bosons with purely righthanded couplings. Upper limits at 95% confidence level are set on the W'-boson coupling to tb as a function of the W' mass using an effective field theory approach, which is independent of details of particular models predicting a W' boson.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Search for W' → tb→ qqbb decays in pp collisions at √s = 8 TeV with the ATLAS detector
title_short Search for W' → tb→ qqbb decays in pp collisions at √s = 8 TeV with the ATLAS detector
title_full Search for W' → tb→ qqbb decays in pp collisions at √s = 8 TeV with the ATLAS detector
title_fullStr Search for W' → tb→ qqbb decays in pp collisions at √s = 8 TeV with the ATLAS detector
title_full_unstemmed Search for W' → tb→ qqbb decays in pp collisions at √s = 8 TeV with the ATLAS detector
title_sort search for w' → tb→ qqbb decays in pp collisions at √s = 8 tev with the atlas detector
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/79211
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