Measurements of integrated and differential cross sections for isolated photon pair production in pp collisions at √ s = 8 TeV with the ATLAS detector

A measurement of the production cross section for two isolated photons in proton-proton collisions at a center-of-mass energy of s=8 TeV is presented. The results are based on an integrated luminosity of 20.2 fb-1 recorded by the ATLAS detector at the Large Hadron Collider. The measurement considers...

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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:	2017
Materias:	Física Proton-proton collisions Large Hadron Collider
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/87630
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-87630
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Proton-proton collisions Large Hadron Collider
spellingShingle	Física Proton-proton collisions Large Hadron Collider Alconada Verzini, María Josefina Alonso, Francisco Arduh, Francisco Anuar Dova, María Teresa Hoya, Joaquín Monticelli, Fernando Gabriel Wahlberg, Hernán Pablo The ATLAS Collaboration Measurements of integrated and differential cross sections for isolated photon pair production in pp collisions at √ s = 8 TeV with the ATLAS detector
topic_facet	Física Proton-proton collisions Large Hadron Collider
description	A measurement of the production cross section for two isolated photons in proton-proton collisions at a center-of-mass energy of s=8 TeV is presented. The results are based on an integrated luminosity of 20.2 fb-1 recorded by the ATLAS detector at the Large Hadron Collider. The measurement considers photons with pseudorapidities satisfying \|ηγ\|<1.37 or 1.56<\|ηγ\|<2.37 and transverse energies of respectively ET,1γ>40 GeV and ET,2γ>30 GeV for the two leading photons ordered in transverse energy produced in the interaction. The background due to hadronic jets and electrons is subtracted using data-driven techniques. The fiducial cross sections are corrected for detector effects and measured differentially as a function of six kinematic observables. The measured cross section integrated within the fiducial volume is 16.8±0.8 pb. The data are compared to fixed-order QCD calculations at next-to-leading-order and next-to-next-to-leading-order accuracy as well as next-to-leading-order computations including resummation of initial-state gluon radiation at next-to-next-to-leading logarithm or matched to a parton shower, with relative uncertainties varying from 5% to 20%.
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	Measurements of integrated and differential cross sections for isolated photon pair production in pp collisions at √ s = 8 TeV with the ATLAS detector
title_short	Measurements of integrated and differential cross sections for isolated photon pair production in pp collisions at √ s = 8 TeV with the ATLAS detector
title_full	Measurements of integrated and differential cross sections for isolated photon pair production in pp collisions at √ s = 8 TeV with the ATLAS detector
title_fullStr	Measurements of integrated and differential cross sections for isolated photon pair production in pp collisions at √ s = 8 TeV with the ATLAS detector
title_full_unstemmed	Measurements of integrated and differential cross sections for isolated photon pair production in pp collisions at √ s = 8 TeV with the ATLAS detector
title_sort	measurements of integrated and differential cross sections for isolated photon pair production in pp collisions at √ s = 8 tev with the atlas detector
publishDate	2017
url	http://sedici.unlp.edu.ar/handle/10915/87630
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Measurements of integrated and differential cross sections for isolated photon pair production in pp collisions at √ s = 8 TeV with the ATLAS detector

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