Search for Higgs boson pair production in the b ¯bb¯b final state from pp collisions at √s = 8 TeV with the ATLAS detector

A search for Higgs boson pair production pp → hh is performed with 19.5 fb−1 of proton–proton collision data at √s = 8TeV, which were recorded by the ATLAS detector at the Large Hadron Collider in 2012. The decay products of each Higgs boson are reconstructed as a high momentum b¯b system with eithe...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79143
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id I19-R120-10915-79143
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
proton-proton collisions
ATLAS detector
large hadron collider
spellingShingle Ciencias Exactas
Física
Higgs boson
proton-proton collisions
ATLAS detector
large hadron collider
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Search for Higgs boson pair production in the b ¯bb¯b final state from pp collisions at √s = 8 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
Higgs boson
proton-proton collisions
ATLAS detector
large hadron collider
description A search for Higgs boson pair production pp → hh is performed with 19.5 fb−1 of proton–proton collision data at √s = 8TeV, which were recorded by the ATLAS detector at the Large Hadron Collider in 2012. The decay products of each Higgs boson are reconstructed as a high momentum b¯b system with either a pair of small-radius jets or a single large-radius jet, the latter exploiting jet substructure techniques and associated b-tagged track-jets. No evidence for resonant or non-resonant Higgs boson pair production is observed. The data are interpreted in the context of the Randall–Sundrum model with a warped extra dimension as well as the two-Higgs-doublet model. An upper limit on the cross-section for pp → G∗ KK → hh → b ¯ bb¯b of 3.2 (2.3) fb is set for a Kaluza–Klein graviton G∗ KK mass of 1.0 (1.5)TeV, at the 95 % confidence level. The search for non-resonant Standard Model hh production sets an observed 95 % confidence level upper limit on the production cross-section σ(pp → hh → b ¯ bb¯b ) of 202 fb, compared to a Standard Model prediction of σ(pp → hh → b ¯ bb¯b) = 3.6 ± 0.5fb.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Search for Higgs boson pair production in the b ¯bb¯b final state from pp collisions at √s = 8 TeV with the ATLAS detector
title_short Search for Higgs boson pair production in the b ¯bb¯b final state from pp collisions at √s = 8 TeV with the ATLAS detector
title_full Search for Higgs boson pair production in the b ¯bb¯b final state from pp collisions at √s = 8 TeV with the ATLAS detector
title_fullStr Search for Higgs boson pair production in the b ¯bb¯b final state from pp collisions at √s = 8 TeV with the ATLAS detector
title_full_unstemmed Search for Higgs boson pair production in the b ¯bb¯b final state from pp collisions at √s = 8 TeV with the ATLAS detector
title_sort search for higgs boson pair production in the b ¯bb¯b final state from pp collisions at √s = 8 tev with the atlas detector
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/79143
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