Search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the ATLAS detector

This article reports on a search for dark matter pair production in association with bottom or top quarks in 20.3 fb<SUP>-1</SUP> of <i>pp</i> collisions collected at √s = 8 TeV by the ATLAS detector at the LHC. Events with large missing transverse momentum are selected when...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Arduh, Francisco Anuar, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Exactas
Física
proton-proton collisions
ATLAS detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85877
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85877
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
proton-proton collisions
ATLAS detector
spellingShingle Ciencias Exactas
Física
proton-proton collisions
ATLAS detector
Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the ATLAS detector
topic_facet Ciencias Exactas
Física
proton-proton collisions
ATLAS detector
description This article reports on a search for dark matter pair production in association with bottom or top quarks in 20.3 fb<SUP>-1</SUP> of <i>pp</i> collisions collected at √s = 8 TeV by the ATLAS detector at the LHC. Events with large missing transverse momentum are selected when produced in association with high-momentum jets of which one or more are identified as jets containing <i>b</i>-quarks. Final states with top quarks are selected by requiring a high jet multiplicity and in some cases a single lepton. The data are found to be consistent with the Standard Model expectations and limits are set on the mass scale of effective field theories that describe scalar and tensor interactions between dark matter and Standard Model particles. Limits on the dark-matter–nucleon cross-section for spin-independent and spin-dependent interactions are also provided. These limits are particularly strong for low-mass dark matter. Using a simplified model, constraints are set on the mass of dark matter and of a coloured mediator suitable to explain a possible signal of annihilating dark matter.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the ATLAS detector
title_short Search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the ATLAS detector
title_full Search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the ATLAS detector
title_fullStr Search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the ATLAS detector
title_full_unstemmed Search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the ATLAS detector
title_sort search for dark matter in events with heavy quarks and missing transverse momentum in pp collisions with the atlas detector
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/85877
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AT alonsofrancisco searchfordarkmatterineventswithheavyquarksandmissingtransversemomentuminppcollisionswiththeatlasdetector
AT anduagaxabiersebastian searchfordarkmatterineventswithheavyquarksandmissingtransversemomentuminppcollisionswiththeatlasdetector
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AT dovamariateresa searchfordarkmatterineventswithheavyquarksandmissingtransversemomentuminppcollisionswiththeatlasdetector
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bdutipo_str Repositorios
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