Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in √s = 13 TeV pp collisions with the ATLAS detector
- Autores
- Alconada Verzini, María Josefina; Alonso, Francisco; Arduh, Francisco Anuar; Dova, María Teresa; Hoya, Joaquín; Monticelli, Fernando Gabriel; Wahlberg, Hernán Pablo; The ATLAS Collaboration
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A search for direct top squark pair production resulting in events with either a same-flavour opposite-sign dilepton pair with invariant mass compatible with a Z boson or a pair of jets compatible with a Standard Model (SM) Higgs boson (h) is presented. Requirements on the missing transverse momentum, together with additional selections on leptons, jets, jets identified as originating from b-quarks are imposed to target the other decay products of the top squark pair. The analysis is performed using proton-proton collision data at √s = 13 TeV collected with the ATLAS detector at the LHC in 2015–2016, corresponding to an integrated luminosity of 36.1 fb-1. No excess is observed in the data with respect to the SM predictions. The results are interpreted in two sets of models. In the first set, direct production of pairs of lighter top squarks (t˜1) with long decay chains involving Z or Higgs bosons is considered. The second set includes direct pair production of the heavier top squark pairs (t˜2) decaying via t˜2→ Zt˜1 or t˜2→ ht˜1. The results exclude at 95% confidence level t˜2 and t˜1 masses up to about 800 GeV, extending the exclusion region of supersymmetric parameter space covered by previous LHC searches.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Facultad de Ciencias Exactas
Instituto de Física La Plata - Materia
-
Ciencias Exactas
Física
Beyond Standard Model
Hadron-Hadron scattering (experiments)
Higgs physics - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/87457
Ver los metadatos del registro completo
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Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in √s = 13 TeV pp collisions with the ATLAS detectorAlconada Verzini, María JosefinaAlonso, FranciscoArduh, Francisco AnuarDova, María TeresaHoya, JoaquínMonticelli, Fernando GabrielWahlberg, Hernán PabloThe ATLAS CollaborationCiencias ExactasFísicaBeyond Standard ModelHadron-Hadron scattering (experiments)Higgs physicsA search for direct top squark pair production resulting in events with either a same-flavour opposite-sign dilepton pair with invariant mass compatible with a Z boson or a pair of jets compatible with a Standard Model (SM) Higgs boson (h) is presented. Requirements on the missing transverse momentum, together with additional selections on leptons, jets, jets identified as originating from b-quarks are imposed to target the other decay products of the top squark pair. The analysis is performed using proton-proton collision data at √s = 13 TeV collected with the ATLAS detector at the LHC in 2015–2016, corresponding to an integrated luminosity of 36.1 fb<sup>-1</sup>. No excess is observed in the data with respect to the SM predictions. The results are interpreted in two sets of models. In the first set, direct production of pairs of lighter top squarks (t˜<sub>1</sub>) with long decay chains involving Z or Higgs bosons is considered. The second set includes direct pair production of the heavier top squark pairs (t˜<sub>2</sub>) decaying via t˜<sub>2</sub>→ Zt˜<sub>1</sub> or t˜<sub>2</sub>→ ht˜<sub>1</sub>. The results exclude at 95% confidence level t˜<sub>2</sub> and t˜<sub>1</sub> masses up to about 800 GeV, extending the exclusion region of supersymmetric parameter space covered by previous LHC searches.La lista completa de autores que integran el documento puede consultarse en el archivo.Facultad de Ciencias ExactasInstituto de Física La Plata2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/87457enginfo:eu-repo/semantics/altIdentifier/issn/1126-6708info:eu-repo/semantics/altIdentifier/doi/10.1007/JHEP08(2017)006info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:09:06Zoai:sedici.unlp.edu.ar:10915/87457Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:09:07.183SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in √s = 13 TeV pp collisions with the ATLAS detector |
| title |
Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in √s = 13 TeV pp collisions with the ATLAS detector |
| spellingShingle |
Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in √s = 13 TeV pp collisions with the ATLAS detector Alconada Verzini, María Josefina Ciencias Exactas Física Beyond Standard Model Hadron-Hadron scattering (experiments) Higgs physics |
| title_short |
Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in √s = 13 TeV pp collisions with the ATLAS detector |
| title_full |
Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in √s = 13 TeV pp collisions with the ATLAS detector |
| title_fullStr |
Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in √s = 13 TeV pp collisions with the ATLAS detector |
| title_full_unstemmed |
Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in √s = 13 TeV pp collisions with the ATLAS detector |
| title_sort |
Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in √s = 13 TeV pp collisions with the ATLAS detector |
| dc.creator.none.fl_str_mv |
Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author |
Alconada Verzini, María Josefina |
| 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_role |
author |
| author2 |
Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration |
| author2_role |
author author author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Física Beyond Standard Model Hadron-Hadron scattering (experiments) Higgs physics |
| topic |
Ciencias Exactas Física Beyond Standard Model Hadron-Hadron scattering (experiments) Higgs physics |
| dc.description.none.fl_txt_mv |
A search for direct top squark pair production resulting in events with either a same-flavour opposite-sign dilepton pair with invariant mass compatible with a Z boson or a pair of jets compatible with a Standard Model (SM) Higgs boson (h) is presented. Requirements on the missing transverse momentum, together with additional selections on leptons, jets, jets identified as originating from b-quarks are imposed to target the other decay products of the top squark pair. The analysis is performed using proton-proton collision data at √s = 13 TeV collected with the ATLAS detector at the LHC in 2015–2016, corresponding to an integrated luminosity of 36.1 fb<sup>-1</sup>. No excess is observed in the data with respect to the SM predictions. The results are interpreted in two sets of models. In the first set, direct production of pairs of lighter top squarks (t˜<sub>1</sub>) with long decay chains involving Z or Higgs bosons is considered. The second set includes direct pair production of the heavier top squark pairs (t˜<sub>2</sub>) decaying via t˜<sub>2</sub>→ Zt˜<sub>1</sub> or t˜<sub>2</sub>→ ht˜<sub>1</sub>. The results exclude at 95% confidence level t˜<sub>2</sub> and t˜<sub>1</sub> masses up to about 800 GeV, extending the exclusion region of supersymmetric parameter space covered by previous LHC searches. La lista completa de autores que integran el documento puede consultarse en el archivo. Facultad de Ciencias Exactas Instituto de Física La Plata |
| description |
A search for direct top squark pair production resulting in events with either a same-flavour opposite-sign dilepton pair with invariant mass compatible with a Z boson or a pair of jets compatible with a Standard Model (SM) Higgs boson (h) is presented. Requirements on the missing transverse momentum, together with additional selections on leptons, jets, jets identified as originating from b-quarks are imposed to target the other decay products of the top squark pair. The analysis is performed using proton-proton collision data at √s = 13 TeV collected with the ATLAS detector at the LHC in 2015–2016, corresponding to an integrated luminosity of 36.1 fb<sup>-1</sup>. No excess is observed in the data with respect to the SM predictions. The results are interpreted in two sets of models. In the first set, direct production of pairs of lighter top squarks (t˜<sub>1</sub>) with long decay chains involving Z or Higgs bosons is considered. The second set includes direct pair production of the heavier top squark pairs (t˜<sub>2</sub>) decaying via t˜<sub>2</sub>→ Zt˜<sub>1</sub> or t˜<sub>2</sub>→ ht˜<sub>1</sub>. The results exclude at 95% confidence level t˜<sub>2</sub> and t˜<sub>1</sub> masses up to about 800 GeV, extending the exclusion region of supersymmetric parameter space covered by previous LHC searches. |
| publishDate |
2017 |
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2017 |
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eng |
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eng |
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