Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at √s = 13TeV with the ATLAS detector

A search for new phenomena in events with two same-charge leptons or three leptons and jets identified as originating from b-quarks in a data sample of 36.1 fb−1 of pp collisions at √s = 13 TeV recorded by the ATLAS detector at the Large Hadron Collider is reported. No significant excess is found an...

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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: 2018
Materias:
Ciencias Exactas
Física
hadron-hadron scattering
Partículas Elementales
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82843
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82843
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
Partículas Elementales
spellingShingle Ciencias Exactas
Física
hadron-hadron scattering
Partículas Elementales
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 new phenomena in events with same-charge leptons and b-jets in pp collisions at √s = 13TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
hadron-hadron scattering
Partículas Elementales
description A search for new phenomena in events with two same-charge leptons or three leptons and jets identified as originating from b-quarks in a data sample of 36.1 fb−1 of pp collisions at √s = 13 TeV recorded by the ATLAS detector at the Large Hadron Collider is reported. No significant excess is found and limits are set on vector-like quark, four-top-quark, and same-sign top-quark pair production. The observed (expected) 95% CL mass limits for a vector-like T- and B-quark singlet are mT < 0.98 (0.99) TeV and mB < 1.00 (1.01) TeV respectively. Limits on the production of the vector-like T5/3-quark are also derived considering both pair and single production; in the former case the lower limit on the mass of the T5/3-quark is (expected to be) 1.19 (1.21) TeV. The Standard Model four-top-quark production cross-section upper limit is (expected to be) 69 (29) fb. Constraints are also set on exotic four-top-quark production models. Finally, limits are set on same-sign top-quark pair production. The upper limit on uu → tt production is (expected to be) 89 (59) fb for a mediator mass of 1 TeV, and a dark-matter interpretation is also derived, excluding a mediator of 3 TeV with a dark-sector coupling of 1.0 and a coupling to ordinary matter above 0.31.
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 new phenomena in events with same-charge leptons and b-jets in pp collisions at √s = 13TeV with the ATLAS detector
title_short Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at √s = 13TeV with the ATLAS detector
title_full Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at √s = 13TeV with the ATLAS detector
title_fullStr Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at √s = 13TeV with the ATLAS detector
title_full_unstemmed Search for new phenomena in events with same-charge leptons and b-jets in pp collisions at √s = 13TeV with the ATLAS detector
title_sort search for new phenomena in events with same-charge leptons and b-jets in pp collisions at √s = 13tev with the atlas detector
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/82843
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