Probing the quantum interference between singly and doubly resonant top-quark production in pp collisions at √s = 13 TeV with the ATLAS detector

This Letter presents a normalized differential cross-section measurement in a fiducial phase-space region where interference effects between top-quark pair production and associated production of a single top quark with a W boson and a b-quark are significant. Events with exactly two leptons (ee, μμ...

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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
top quark
Interacciones de Partículas Elementales
ATLAS detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79747
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79747
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
top quark
Interacciones de Partículas Elementales
ATLAS detector
spellingShingle Ciencias Exactas
Física
top quark
Interacciones de Partículas Elementales
ATLAS detector
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Probing the quantum interference between singly and doubly resonant top-quark production in pp collisions at √s = 13 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
top quark
Interacciones de Partículas Elementales
ATLAS detector
description This Letter presents a normalized differential cross-section measurement in a fiducial phase-space region where interference effects between top-quark pair production and associated production of a single top quark with a W boson and a b-quark are significant. Events with exactly two leptons (ee, μμ, or eμ) and two b-tagged jets that satisfy a multiparticle invariant mass requirement are selected from 36.1 fb<sup>−1</sup> of proton- proton collision data taken at √s = 13 TeV with the ATLAS detector at the LHC in 2015 and 2016. The results are compared with predictions from simulations using various strategies for the interference. The standard prescriptions for interference modeling are significantly different from each other but are within 2σ of the data. State-of-the-art predictions that naturally incorporate interference effects provide the best description of the data in the measured region of phase space most sensitive to these effects. These results provide an important constraint on interference models and will guide future model development and tuning.
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 Probing the quantum interference between singly and doubly resonant top-quark production in pp collisions at √s = 13 TeV with the ATLAS detector
title_short Probing the quantum interference between singly and doubly resonant top-quark production in pp collisions at √s = 13 TeV with the ATLAS detector
title_full Probing the quantum interference between singly and doubly resonant top-quark production in pp collisions at √s = 13 TeV with the ATLAS detector
title_fullStr Probing the quantum interference between singly and doubly resonant top-quark production in pp collisions at √s = 13 TeV with the ATLAS detector
title_full_unstemmed Probing the quantum interference between singly and doubly resonant top-quark production in pp collisions at √s = 13 TeV with the ATLAS detector
title_sort probing the quantum interference between singly and doubly resonant top-quark production in pp collisions at √s = 13 tev with the atlas detector
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/79747
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