Search for top quark decays t → qH, with H → γγ, in √s = 13 TeV pp collisions using the ATLAS detector

This article presents a search for avour-changing neutral currents in the decay of a top quark into an up-type (q = c, u) quark and a Higgs boson, where the Higgs boson decays into two photons. The proton-proton collision data set analysed amounts to 36.1 fb<sup>-1</sup> at √s = 13TeV co...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Exactas
Física
flavour changing neutral currents
hadron-hadron scattering
Higgs physics
top physics
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82205
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82205
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
flavour changing neutral currents
hadron-hadron scattering
Higgs physics
top physics
spellingShingle Ciencias Exactas
Física
flavour changing neutral currents
hadron-hadron scattering
Higgs physics
top physics
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Search for top quark decays t → qH, with H → γγ, in √s = 13 TeV pp collisions using the ATLAS detector
topic_facet Ciencias Exactas
Física
flavour changing neutral currents
hadron-hadron scattering
Higgs physics
top physics
description This article presents a search for avour-changing neutral currents in the decay of a top quark into an up-type (q = c, u) quark and a Higgs boson, where the Higgs boson decays into two photons. The proton-proton collision data set analysed amounts to 36.1 fb<sup>-1</sup> at √s = 13TeV collected by the ATLAS experiment at the LHC. Top quark pair events are searched for, where one top quark decays into qH and the other decays into bW. Both the hadronic and leptonic decay modes of the W boson are used. No signi cant excess is observed and an upper limit is set on the t → cH branching ratio of 2.2 x 10<sup>-3</sup> at the 95% con dence level, while the expected limit in the absence of signal is 1.6 x 10<sup>-3</sup>. The corresponding limit on the tcH coupling is 0.090 at the 95% con dence level. The observed upper limit on the t → uH branching ratio is 2.4 x 10<sup>-3</sup>.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Search for top quark decays t → qH, with H → γγ, in √s = 13 TeV pp collisions using the ATLAS detector
title_short Search for top quark decays t → qH, with H → γγ, in √s = 13 TeV pp collisions using the ATLAS detector
title_full Search for top quark decays t → qH, with H → γγ, in √s = 13 TeV pp collisions using the ATLAS detector
title_fullStr Search for top quark decays t → qH, with H → γγ, in √s = 13 TeV pp collisions using the ATLAS detector
title_full_unstemmed Search for top quark decays t → qH, with H → γγ, in √s = 13 TeV pp collisions using the ATLAS detector
title_sort search for top quark decays t → qh, with h → γγ, in √s = 13 tev pp collisions using the atlas detector
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/82205
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AT alonsofrancisco searchfortopquarkdecaystqhwithhngins13tevppcollisionsusingtheatlasdetector
AT arduhfranciscoanuar searchfortopquarkdecaystqhwithhngins13tevppcollisionsusingtheatlasdetector
AT dovamariateresa searchfortopquarkdecaystqhwithhngins13tevppcollisionsusingtheatlasdetector
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AT monticellifernandogabriel searchfortopquarkdecaystqhwithhngins13tevppcollisionsusingtheatlasdetector
AT wahlberghernanpablo searchfortopquarkdecaystqhwithhngins13tevppcollisionsusingtheatlasdetector
AT theatlascollaboration searchfortopquarkdecaystqhwithhngins13tevppcollisionsusingtheatlasdetector
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