Determination of the strong coupling constant αs from transverse energy–energy correlations in multijet events at √s = 8 TeV using the ATLAS detector

Measurements of transverse energy–energy correlations and their associated asymmetries in multi-jet events using the ATLAS detector at the LHC are presented. The data used correspond to √s = 8 TeV proton–proton collisions with an integrated luminosity of 20.2 fb-1. The results are presented in bins...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Exactas
Física
energy-energy correlations
quantum chromodynamics
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/81950
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-81950
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
energy-energy correlations
quantum chromodynamics
spellingShingle Ciencias Exactas
Física
energy-energy correlations
quantum chromodynamics
Alconada Verzini, María Josefina
Alonso, Francisco
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Determination of the strong coupling constant αs from transverse energy–energy correlations in multijet events at √s = 8 TeV using the ATLAS detector
topic_facet Ciencias Exactas
Física
energy-energy correlations
quantum chromodynamics
description Measurements of transverse energy–energy correlations and their associated asymmetries in multi-jet events using the ATLAS detector at the LHC are presented. The data used correspond to √s = 8 TeV proton–proton collisions with an integrated luminosity of 20.2 fb-1. The results are presented in bins of the scalar sum of the transverse momenta of the two leading jets, unfolded to the particle level and compared to the predictions from Monte Carlo simulations. A comparison with next-to-leading-order perturbative QCD is also performed, showing excellent agreement within the uncertainties. From this comparison, the value of the strong coupling constant is extracted for different energy regimes, thus testing the running of αs (μ) predicted in QCD up to scales over 1 TeV. A global fit to the transverse energy–energy correlation distributions yields α<sub>s</sub>(m<sub>Z</sub>) = 0.1162 ± 0.0011 (exp.)<sup>+0.0084</sup><sub>-0.0070</sub> (theo.), while a global fit to the asymmetry distributions yields a value of α<sub>s</sub>(m<sub>Z</sub>) = 0.1196 ± 0.0013 (exp.)<sup>+0.0075</sup><sub>-0.0045</sub> (theo.).
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Determination of the strong coupling constant αs from transverse energy–energy correlations in multijet events at √s = 8 TeV using the ATLAS detector
title_short Determination of the strong coupling constant αs from transverse energy–energy correlations in multijet events at √s = 8 TeV using the ATLAS detector
title_full Determination of the strong coupling constant αs from transverse energy–energy correlations in multijet events at √s = 8 TeV using the ATLAS detector
title_fullStr Determination of the strong coupling constant αs from transverse energy–energy correlations in multijet events at √s = 8 TeV using the ATLAS detector
title_full_unstemmed Determination of the strong coupling constant αs from transverse energy–energy correlations in multijet events at √s = 8 TeV using the ATLAS detector
title_sort determination of the strong coupling constant αs from transverse energy–energy correlations in multijet events at √s = 8 tev using the atlas detector
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/81950
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bdutipo_str Repositorios
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