Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC

This paper presents the method and performance of primary vertex reconstruction in proton–proton collision data recorded by the ATLAS experiment during Run 1 of the LHC. The studies presented focus on data taken during 2012 at a centre-of-mass energy of √s = 8 TeV. The performance has been measured...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Física
proton-proton collisions
ATLAS experiment
large hadron collider
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/78560
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-78560
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
ATLAS experiment
large hadron collider
spellingShingle Física
proton-proton collisions
ATLAS experiment
large hadron collider
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC
topic_facet Física
proton-proton collisions
ATLAS experiment
large hadron collider
description This paper presents the method and performance of primary vertex reconstruction in proton–proton collision data recorded by the ATLAS experiment during Run 1 of the LHC. The studies presented focus on data taken during 2012 at a centre-of-mass energy of √s = 8 TeV. The performance has been measured as a function of the number of interactions per bunch crossing over a wide range, from one to seventy. The measurement of the position and size of the luminous region and its use as a constraint to improve the primary vertex resolution are discussed. A longitudinal vertex position resolution of about 30 μm is achieved for eventswith high multiplicity of reconstructed tracks. The transverse position resolution is better than 20 μm and is dominated bythe precision on the size of the luminous region. An analytical model is proposed to describe the primary vertex reconstruction efficiency as a function of the number of interactions per bunch crossing and of the longitudinal size of the luminous region. Agreement between the data and the predictions of this model is better than 3% up to seventy interactions per bunch crossing.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC
title_short Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC
title_full Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC
title_fullStr Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC
title_full_unstemmed Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC
title_sort reconstruction of primary vertices at the atlas experiment in run 1 proton–proton collisions at the lhc
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/78560
work_keys_str_mv AT alconadaverzinimariajosefina reconstructionofprimaryverticesattheatlasexperimentinrun1protonprotoncollisionsatthelhc
AT alonsofrancisco reconstructionofprimaryverticesattheatlasexperimentinrun1protonprotoncollisionsatthelhc
AT arduhfranciscoanuar reconstructionofprimaryverticesattheatlasexperimentinrun1protonprotoncollisionsatthelhc
AT dovamariateresa reconstructionofprimaryverticesattheatlasexperimentinrun1protonprotoncollisionsatthelhc
AT monticellifernandogabriel reconstructionofprimaryverticesattheatlasexperimentinrun1protonprotoncollisionsatthelhc
AT wahlberghernanpablo reconstructionofprimaryverticesattheatlasexperimentinrun1protonprotoncollisionsatthelhc
AT theatlascollaboration reconstructionofprimaryverticesattheatlasexperimentinrun1protonprotoncollisionsatthelhc
bdutipo_str Repositorios
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