Search for Higgs boson decays to a photon and a Z boson in pp collisions at √s = 7 and 8 TeV with the ATLAS detector

A search is reported for a neutral Higgs boson in the decay channel H → Zγ, Z → ℓ+ℓ- (ℓ = e,μ), using 4.5 fb<sup>-1</sup> of pp collisions at √s = 7TeV and 20.3 fb<sup>-1</sup> of pp collisions at √s = 8 TeV, recorded by the ATLAS detector at the CERN Large Hadron Collider. T...

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Detalles Bibliográficos
Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín F., The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Exactas
Física
Higgs boson
z boson
Fotones
ATLAS detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/80365
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-80365
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
Higgs boson
z boson
Fotones
ATLAS detector
spellingShingle Ciencias Exactas
Física
Higgs boson
z boson
Fotones
ATLAS detector
Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
Search for Higgs boson decays to a photon and a Z boson in pp collisions at √s = 7 and 8 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
Higgs boson
z boson
Fotones
ATLAS detector
description A search is reported for a neutral Higgs boson in the decay channel H → Zγ, Z → ℓ+ℓ- (ℓ = e,μ), using 4.5 fb<sup>-1</sup> of pp collisions at √s = 7TeV and 20.3 fb<sup>-1</sup> of pp collisions at √s = 8 TeV, recorded by the ATLAS detector at the CERN Large Hadron Collider. The observed distribution of the invariant mass of the three final-state particles, m<sub>ℓℓγ</sub> , is consistent with the Standard Model hypothesis in the investigated mass range of 120–150 GeV. For a Higgs boson with a mass of 125.5 GeV, the observed upper limit at the 95% confidence level is 11 times the Standard Model expectation. Upper limits are set on the cross section times branching ratio of a neutral Higgs boson with mass in the range 120–150 GeV between 0.13 and 0.5 pb for √s = 8 TeV at 95% confidence level.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Search for Higgs boson decays to a photon and a Z boson in pp collisions at √s = 7 and 8 TeV with the ATLAS detector
title_short Search for Higgs boson decays to a photon and a Z boson in pp collisions at √s = 7 and 8 TeV with the ATLAS detector
title_full Search for Higgs boson decays to a photon and a Z boson in pp collisions at √s = 7 and 8 TeV with the ATLAS detector
title_fullStr Search for Higgs boson decays to a photon and a Z boson in pp collisions at √s = 7 and 8 TeV with the ATLAS detector
title_full_unstemmed Search for Higgs boson decays to a photon and a Z boson in pp collisions at √s = 7 and 8 TeV with the ATLAS detector
title_sort search for higgs boson decays to a photon and a z boson in pp collisions at √s = 7 and 8 tev with the atlas detector
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/80365
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