Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector
Distributions sensitive to the underlying event in QCD jet events have been measured with the ATLAS detector at the LHC, based on 37 pb<SUP>-1</SUP> of proton–proton collision data collected at a centre-of-mass energy of 7 TeV. Charged-particle mean p<SUB>T</SUB> and densitie...
Guardado en:
Autores principales: | , , , , , , |
---|---|
Formato: | Articulo |
Lenguaje: | Inglés |
Publicado: |
2014
|
Materias: | |
Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/85091 |
Aporte de: |
id |
I19-R120-10915-85091 |
---|---|
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 proton–proton collisions ATLAS detector |
spellingShingle |
Ciencias Exactas Física proton–proton collisions ATLAS detector Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín Fernando The ATLAS Collaboration Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector |
topic_facet |
Ciencias Exactas Física proton–proton collisions ATLAS detector |
description |
Distributions sensitive to the underlying event in QCD jet events have been measured with the ATLAS detector at the LHC, based on 37 pb<SUP>-1</SUP> of proton–proton collision data collected at a centre-of-mass energy of 7 TeV. Charged-particle mean p<SUB>T</SUB> and densities of all-particle E<SUB>T</SUB> and charged-particle multiplicity and p<SUB>T</SUB> have been measured in regions azimuthally transverse to the hardest jet in each event. These are presented both as one-dimensional distributions and with their mean values as functions of the leading-jet transverse momentum from 20 to 800 GeV. The correlation of charged-particle mean p<SUB>T</SUB> with charged-particle multiplicity is also studied, and the E<SUB>T</SUB> densities include the forward rapidity region; these features provide extra data constraints for Monte Carlo modelling of colour reconnection and beam-remnant effects respectively. For the first time, underlying event observables have been computed separately for inclusive jet and exclusive dijet event selections, allowing more detailed study of the interplay of multiple partonic scattering and QCD radiation contributions to the underlying event. Comparisons to the predictions of different Monte Carlo models show a need for further model tuning, but the standard approach is found to generally reproduce the features of the underlying event in both types of event selection. |
format |
Articulo Articulo |
author |
Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín Fernando The ATLAS Collaboration |
author_facet |
Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín Fernando The ATLAS Collaboration |
author_sort |
Alconada Verzini, María Josefina |
title |
Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector |
title_short |
Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector |
title_full |
Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector |
title_fullStr |
Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector |
title_full_unstemmed |
Measurement of the underlying event in jet events from 7 TeV proton–proton collisions with the ATLAS detector |
title_sort |
measurement of the underlying event in jet events from 7 tev proton–proton collisions with the atlas detector |
publishDate |
2014 |
url |
http://sedici.unlp.edu.ar/handle/10915/85091 |
work_keys_str_mv |
AT alconadaverzinimariajosefina measurementoftheunderlyingeventinjeteventsfrom7tevprotonprotoncollisionswiththeatlasdetector AT alonsofrancisco measurementoftheunderlyingeventinjeteventsfrom7tevprotonprotoncollisionswiththeatlasdetector AT anduagaxabiersebastian measurementoftheunderlyingeventinjeteventsfrom7tevprotonprotoncollisionswiththeatlasdetector AT dovamariateresa measurementoftheunderlyingeventinjeteventsfrom7tevprotonprotoncollisionswiththeatlasdetector AT monticellifernandogabriel measurementoftheunderlyingeventinjeteventsfrom7tevprotonprotoncollisionswiththeatlasdetector AT tripianamartinfernando measurementoftheunderlyingeventinjeteventsfrom7tevprotonprotoncollisionswiththeatlasdetector AT theatlascollaboration measurementoftheunderlyingeventinjeteventsfrom7tevprotonprotoncollisionswiththeatlasdetector |
bdutipo_str |
Repositorios |
_version_ |
1764820488955101185 |