Search for charged Higgs bosons in the H ± → tb decay channel in pp collisions at √s = 8TeV using the ATLAS detector

Charged Higgs bosons heavier than the top quark and decaying via H ± → tb are searched for in proton-proton collisions measured with the ATLAS experiment at √s=8 TeV corresponding to an integrated luminosity of 20.3fb−1. The production of a charged Higgs boson in association with a top quark, gb → t...

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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: 2016
Materias:
Ciencias Exactas
Física
hadron-hadron scattering
Higgs physics
Higgs boson
top quark
ATLAS detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79250
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79250
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
hadron-hadron scattering
Higgs physics
Higgs boson
top quark
ATLAS detector
spellingShingle Ciencias Exactas
Física
hadron-hadron scattering
Higgs physics
Higgs boson
top quark
ATLAS detector
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Search for charged Higgs bosons in the H ± → tb decay channel in pp collisions at √s = 8TeV using the ATLAS detector
topic_facet Ciencias Exactas
Física
hadron-hadron scattering
Higgs physics
Higgs boson
top quark
ATLAS detector
description Charged Higgs bosons heavier than the top quark and decaying via H ± → tb are searched for in proton-proton collisions measured with the ATLAS experiment at √s=8 TeV corresponding to an integrated luminosity of 20.3fb−1. The production of a charged Higgs boson in association with a top quark, gb → tH ±, is explored in the mass range 200 to 600 GeV using multi-jet final states with one electron or muon. In order to separate the signal from the Standard Model background, analysis techniques combining several kinematic variables are employed. An excess of events above the background-only hypothesis is observed across a wide mass range, amounting to up to 2.4 standard deviations. Upper limits are set on the gb → tH ± production cross section times the branching fraction BR(H ± → tb). Additionally, the complementary s-channel production, qq ′ → H ±, is investigated through a reinterpretation of W ′ → tb searches in ATLAS. Final states with one electron or muon are relevant for H ± masses from 0.4 to 2.0 TeV, whereas the all-hadronic final state covers the range 1.5 to 3.0 TeV. In these search channels, no significant excesses from the predictions of the Standard Model are observed, and upper limits are placed on the qq ′ → H ± production cross section times the branching fraction BR(H ± → tb).
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 charged Higgs bosons in the H ± → tb decay channel in pp collisions at √s = 8TeV using the ATLAS detector
title_short Search for charged Higgs bosons in the H ± → tb decay channel in pp collisions at √s = 8TeV using the ATLAS detector
title_full Search for charged Higgs bosons in the H ± → tb decay channel in pp collisions at √s = 8TeV using the ATLAS detector
title_fullStr Search for charged Higgs bosons in the H ± → tb decay channel in pp collisions at √s = 8TeV using the ATLAS detector
title_full_unstemmed Search for charged Higgs bosons in the H ± → tb decay channel in pp collisions at √s = 8TeV using the ATLAS detector
title_sort search for charged higgs bosons in the h ± → tb decay channel in pp collisions at √s = 8tev using the atlas detector
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/79250
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AT alonsofrancisco searchforchargedhiggsbosonsinthehtbdecaychannelinppcollisionsats8tevusingtheatlasdetector
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AT dovamariateresa searchforchargedhiggsbosonsinthehtbdecaychannelinppcollisionsats8tevusingtheatlasdetector
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AT wahlberghernanpablo searchforchargedhiggsbosonsinthehtbdecaychannelinppcollisionsats8tevusingtheatlasdetector
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