Search for pair and single production of vectorlike quarks in final states with at least one Z boson decaying into a pair of electrons muons in pp collision data collected with the...
- 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
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A search for vectorlike quarks is presented, which targets their decay into a Z boson and a third- generation Standard Model quark. In the case of a vectorlike quark T (B) with charge þ2=3e (−1=3e), the decay searched for is T → Zt (B → Zb). Data for this analysis were taken during 2015 and 2016 with the ATLAS detector at the Large Hadron Collider and correspond to an integrated luminosity of 36.1 fb−1 of pp collisions at √s = 13 TeV. The final state used is characterized by the presence of b-tagged jets, as well as a Z boson with high transverse momentum, which is reconstructed from a pair of opposite-sign same-flavor leptons. Pair and single production of vectorlike quarks are both taken into account and are each searched for using optimized dileptonic exclusive and trileptonic inclusive event selections. In these selections, the high scalar sum of jet transverse momenta, the presence of high-transverse-momentum large-radius jets, as well as—in the case of the single-production selections—the presence of forward jets are used. No significant excess over the background-only hypothesis is found and exclusion limits at 95% confidence level allow masses of vectorlike quarks of mT > 1030 GeV (mT > 1210 GeV) and mB > 1010 GeV (mB > 1140 GeV) in the singlet (doublet) model. In the case of 100% branching ratio for T → Zt (B → Zb), the limits are mT > 1340 GeV (mB > 1220 GeV). Limits at 95% confidence level are also set on the coupling to Standard Model quarks for given vectorlike quark masses.
La lista completa de autores puede verse al final del archivo asociado.
Instituto de Física La Plata - Materia
-
Física
Vectorlike quarks
Z boson decay channels
ATLAS search limits - 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:10915/193663
Ver los metadatos del registro completo
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Search for pair and single production of vectorlike quarks in final states with at least one Z boson decaying into a pair of electrons muons in pp collision data collected with the ATLAS detector at √s = 13 TeVAlconada Verzini, María JosefinaAlonso, FranciscoArduh, Francisco AnuarDova, María TeresaHoya, JoaquínMonticelli, Fernando GabrielWahlberg, Hernán PabloThe ATLAS CollaborationFísicaVectorlike quarksZ boson decay channelsATLAS search limitsA search for vectorlike quarks is presented, which targets their decay into a Z boson and a third- generation Standard Model quark. In the case of a vectorlike quark T (B) with charge þ2=3e (−1=3e), the decay searched for is T → Zt (B → Zb). Data for this analysis were taken during 2015 and 2016 with the ATLAS detector at the Large Hadron Collider and correspond to an integrated luminosity of 36.1 fb−1 of pp collisions at √s = 13 TeV. The final state used is characterized by the presence of b-tagged jets, as well as a Z boson with high transverse momentum, which is reconstructed from a pair of opposite-sign same-flavor leptons. Pair and single production of vectorlike quarks are both taken into account and are each searched for using optimized dileptonic exclusive and trileptonic inclusive event selections. In these selections, the high scalar sum of jet transverse momenta, the presence of high-transverse-momentum large-radius jets, as well as—in the case of the single-production selections—the presence of forward jets are used. No significant excess over the background-only hypothesis is found and exclusion limits at 95% confidence level allow masses of vectorlike quarks of mT > 1030 GeV (mT > 1210 GeV) and mB > 1010 GeV (mB > 1140 GeV) in the singlet (doublet) model. In the case of 100% branching ratio for T → Zt (B → Zb), the limits are mT > 1340 GeV (mB > 1220 GeV). Limits at 95% confidence level are also set on the coupling to Standard Model quarks for given vectorlike quark masses.La lista completa de autores puede verse al final del archivo asociado.Instituto de Física La Plata2018info: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/10915/193663enginfo:eu-repo/semantics/altIdentifier/issn/2470-0029info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.98.112010info: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:UNLP2026-05-06T13:00:54Zoai:sedici.unlp.edu.ar:10915/193663Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-05-06 13:00:55.211SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Search for pair and single production of vectorlike quarks in final states with at least one Z boson decaying into a pair of electrons muons in pp collision data collected with the ATLAS detector at √s = 13 TeV |
| title |
Search for pair and single production of vectorlike quarks in final states with at least one Z boson decaying into a pair of electrons muons in pp collision data collected with the ATLAS detector at √s = 13 TeV |
| spellingShingle |
Search for pair and single production of vectorlike quarks in final states with at least one Z boson decaying into a pair of electrons muons in pp collision data collected with the ATLAS detector at √s = 13 TeV Alconada Verzini, María Josefina Física Vectorlike quarks Z boson decay channels ATLAS search limits |
| title_short |
Search for pair and single production of vectorlike quarks in final states with at least one Z boson decaying into a pair of electrons muons in pp collision data collected with the ATLAS detector at √s = 13 TeV |
| title_full |
Search for pair and single production of vectorlike quarks in final states with at least one Z boson decaying into a pair of electrons muons in pp collision data collected with the ATLAS detector at √s = 13 TeV |
| title_fullStr |
Search for pair and single production of vectorlike quarks in final states with at least one Z boson decaying into a pair of electrons muons in pp collision data collected with the ATLAS detector at √s = 13 TeV |
| title_full_unstemmed |
Search for pair and single production of vectorlike quarks in final states with at least one Z boson decaying into a pair of electrons muons in pp collision data collected with the ATLAS detector at √s = 13 TeV |
| title_sort |
Search for pair and single production of vectorlike quarks in final states with at least one Z boson decaying into a pair of electrons muons in pp collision data collected with the ATLAS detector at √s = 13 TeV |
| 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 |
Física Vectorlike quarks Z boson decay channels ATLAS search limits |
| topic |
Física Vectorlike quarks Z boson decay channels ATLAS search limits |
| dc.description.none.fl_txt_mv |
A search for vectorlike quarks is presented, which targets their decay into a Z boson and a third- generation Standard Model quark. In the case of a vectorlike quark T (B) with charge þ2=3e (−1=3e), the decay searched for is T → Zt (B → Zb). Data for this analysis were taken during 2015 and 2016 with the ATLAS detector at the Large Hadron Collider and correspond to an integrated luminosity of 36.1 fb−1 of pp collisions at √s = 13 TeV. The final state used is characterized by the presence of b-tagged jets, as well as a Z boson with high transverse momentum, which is reconstructed from a pair of opposite-sign same-flavor leptons. Pair and single production of vectorlike quarks are both taken into account and are each searched for using optimized dileptonic exclusive and trileptonic inclusive event selections. In these selections, the high scalar sum of jet transverse momenta, the presence of high-transverse-momentum large-radius jets, as well as—in the case of the single-production selections—the presence of forward jets are used. No significant excess over the background-only hypothesis is found and exclusion limits at 95% confidence level allow masses of vectorlike quarks of mT > 1030 GeV (mT > 1210 GeV) and mB > 1010 GeV (mB > 1140 GeV) in the singlet (doublet) model. In the case of 100% branching ratio for T → Zt (B → Zb), the limits are mT > 1340 GeV (mB > 1220 GeV). Limits at 95% confidence level are also set on the coupling to Standard Model quarks for given vectorlike quark masses. La lista completa de autores puede verse al final del archivo asociado. Instituto de Física La Plata |
| description |
A search for vectorlike quarks is presented, which targets their decay into a Z boson and a third- generation Standard Model quark. In the case of a vectorlike quark T (B) with charge þ2=3e (−1=3e), the decay searched for is T → Zt (B → Zb). Data for this analysis were taken during 2015 and 2016 with the ATLAS detector at the Large Hadron Collider and correspond to an integrated luminosity of 36.1 fb−1 of pp collisions at √s = 13 TeV. The final state used is characterized by the presence of b-tagged jets, as well as a Z boson with high transverse momentum, which is reconstructed from a pair of opposite-sign same-flavor leptons. Pair and single production of vectorlike quarks are both taken into account and are each searched for using optimized dileptonic exclusive and trileptonic inclusive event selections. In these selections, the high scalar sum of jet transverse momenta, the presence of high-transverse-momentum large-radius jets, as well as—in the case of the single-production selections—the presence of forward jets are used. No significant excess over the background-only hypothesis is found and exclusion limits at 95% confidence level allow masses of vectorlike quarks of mT > 1030 GeV (mT > 1210 GeV) and mB > 1010 GeV (mB > 1140 GeV) in the singlet (doublet) model. In the case of 100% branching ratio for T → Zt (B → Zb), the limits are mT > 1340 GeV (mB > 1220 GeV). Limits at 95% confidence level are also set on the coupling to Standard Model quarks for given vectorlike quark masses. |
| publishDate |
2018 |
| dc.date.none.fl_str_mv |
2018 |
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eng |
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eng |
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