Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector

Studies of the spin, parity and tensor couplings of the Higgs boson in the H → ZZ∗ → 4ℓ, H → WW∗ → eνμν and H → γγ decay processes at the LHC are presented. The investigations are based on 25 fb−1 of pp collision data collected by the ATLAS experiment at √s = 7 TeV and √s = 8 TeV. The Standard Model...

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Autores principales: Dova, María Teresa, Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Exactas
bosón de Higgs
fermiones
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/72912
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-72912
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
bosón de Higgs
fermiones
spellingShingle Ciencias Exactas
bosón de Higgs
fermiones
Dova, María Teresa
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector
topic_facet Ciencias Exactas
bosón de Higgs
fermiones
description Studies of the spin, parity and tensor couplings of the Higgs boson in the H → ZZ∗ → 4ℓ, H → WW∗ → eνμν and H → γγ decay processes at the LHC are presented. The investigations are based on 25 fb−1 of pp collision data collected by the ATLAS experiment at √s = 7 TeV and √s = 8 TeV. The Standard Model (SM) Higgs boson hypothesis, corresponding to the quantum numbers JP = 0+, is tested against several alternative spin scenarios, including non-SM spin-0 and spin-2 models with universal and non-universal couplings to fermions and vector bosons. All tested alternative models are excluded in favour of the SM Higgs boson hypothesis at more than 99.9%confidence level. Using the H → ZZ∗ → 4ℓ and H → WW∗ → eνμν decays, the tensor structure of the interaction between the spin-0 boson and the SM vector bosons is also investigated. The observed distributions of variables sensitive to the non-SMtensor couplings are compatible with the SM predictions and constraints on the non-SM couplings are derived.
format Articulo
Articulo
author Dova, María Teresa
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Dova, María Teresa
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Dova, María Teresa
title Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector
title_short Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector
title_full Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector
title_fullStr Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector
title_full_unstemmed Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector
title_sort study of the spin and parity of the higgs boson in diboson decays with the atlas detector
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/72912
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