Measurement of the tt¯γ production cross section in proton-proton collisions at √s = 8 TeV with the ATLAS detector

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The cross section of a top-quark pair produced in association with a photon is measured in proton-proton collisions at a centre-of-mass energy of √s = 8 TeV with 20.2 fb⁻¹ of data collected by the ATLAS detector at the Large Hadron Collider in 2012. The measurement is performed by selecting events t...

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Detalles Bibliográficos
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: 2017
Materias:
Ciencias Exactas
Física
Hadron-Hadron scattering (experiments)
Top physics
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/124804
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-124804
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 (experiments)
Top physics
spellingShingle Ciencias Exactas
Física
Hadron-Hadron scattering (experiments)
Top physics
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Measurement of the tt¯γ production cross section in proton-proton collisions at √s = 8 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
Hadron-Hadron scattering (experiments)
Top physics
description The cross section of a top-quark pair produced in association with a photon is measured in proton-proton collisions at a centre-of-mass energy of √s = 8 TeV with 20.2 fb⁻¹ of data collected by the ATLAS detector at the Large Hadron Collider in 2012. The measurement is performed by selecting events that contain a photon with transverse momentum p<sub>T</sub> > 15 GeV, an isolated lepton with large transverse momentum, large missing transverse momentum, and at least four jets, where at least one is identified as originating from a b-quark. The production cross section is measured in a fiducial region close to the selection requirements. It is found to be 139 ± 7 (stat.) ± 17 (syst.) fb, in good agreement with the theoretical prediction at next-to-leading order of 151 ± 24 fb. In addition, differential cross sections in the fiducial region are measured as a function of the transverse momentum and pseudorapidity of the photon.
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 Measurement of the tt¯γ production cross section in proton-proton collisions at √s = 8 TeV with the ATLAS detector
title_short Measurement of the tt¯γ production cross section in proton-proton collisions at √s = 8 TeV with the ATLAS detector
title_full Measurement of the tt¯γ production cross section in proton-proton collisions at √s = 8 TeV with the ATLAS detector
title_fullStr Measurement of the tt¯γ production cross section in proton-proton collisions at √s = 8 TeV with the ATLAS detector
title_full_unstemmed Measurement of the tt¯γ production cross section in proton-proton collisions at √s = 8 TeV with the ATLAS detector
title_sort measurement of the tt¯γ production cross section in proton-proton collisions at √s = 8 tev with the atlas detector
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/124804
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AT alonsofrancisco measurementofthettgproductioncrosssectioninprotonprotoncollisionsats8tevwiththeatlasdetector
AT arduhfranciscoanuar measurementofthettgproductioncrosssectioninprotonprotoncollisionsats8tevwiththeatlasdetector
AT dovamariateresa measurementofthettgproductioncrosssectioninprotonprotoncollisionsats8tevwiththeatlasdetector
AT hoyajoaquin measurementofthettgproductioncrosssectioninprotonprotoncollisionsats8tevwiththeatlasdetector
AT monticellifernandogabriel measurementofthettgproductioncrosssectioninprotonprotoncollisionsats8tevwiththeatlasdetector
AT wahlberghernanpablo measurementofthettgproductioncrosssectioninprotonprotoncollisionsats8tevwiththeatlasdetector
AT theatlascollaboration measurementofthettgproductioncrosssectioninprotonprotoncollisionsats8tevwiththeatlasdetector
bdutipo_str Repositorios
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