Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV

Results are presented from the measurement by ATLAS of long-range (|η| > 2) dihadron angular correlations in √s = 8 and 13 TeV pp collisions containing a Z boson. The analysis is performed using 19.4 fb−1 of √s = 8 TeV data recorded during Run 1 of the LHC and 36.1 fb−1 of √s = 13 TeV data re...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Orellana, Gonzalo Enrique, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Física
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/134778
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-134778
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
spellingShingle Física
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV
topic_facet Física
description Results are presented from the measurement by ATLAS of long-range (|η| > 2) dihadron angular correlations in √s = 8 and 13 TeV pp collisions containing a Z boson. The analysis is performed using 19.4 fb−1 of √s = 8 TeV data recorded during Run 1 of the LHC and 36.1 fb−1 of √s = 13 TeV data recorded during Run 2. Two-particle correlation functions are measured as a function of relative azimuthal angle over the relative pseudorapidity range 2 < |η| < 5 for different intervals of charged-particle multiplicity and transverse momentum. The measurements are corrected for the presence of background charged particles generated by collisions that occur during one passage of two colliding proton bunches in the LHC. Contributions to the two-particle correlation functions from hard processes are removed using a template-fitting procedure. Sinusoidal modulation in the correlation functions is observed and quantified by the second Fourier coefficient of the correlation function, v2,2, which in turn is used to obtain the single-particle anisotropy coefficient v2. The v2 values in the Z-tagged events, integrated over 0.5 < pT < 5 GeV, are found to be independent of multiplicity and √s, and consistent within uncertainties with previous measurements in inclusive pp collisions. As a function of charged-particle pT, the Z-tagged and inclusive v2 values are consistent within uncertainties for pT < 3 GeV.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
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
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV
title_short Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV
title_full Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV
title_fullStr Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV
title_full_unstemmed Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV
title_sort measurement of long-range two-particle azimuthal correlations in z-boson tagged pp collisions at √s=8 and 13 tev
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/134778
work_keys_str_mv AT alconadaverzinimariajosefina measurementoflongrangetwoparticleazimuthalcorrelationsinzbosontaggedppcollisionsats8and13tev
AT alonsofrancisco measurementoflongrangetwoparticleazimuthalcorrelationsinzbosontaggedppcollisionsats8and13tev
AT arduhfranciscoanuar measurementoflongrangetwoparticleazimuthalcorrelationsinzbosontaggedppcollisionsats8and13tev
AT dovamariateresa measurementoflongrangetwoparticleazimuthalcorrelationsinzbosontaggedppcollisionsats8and13tev
AT hoyajoaquin measurementoflongrangetwoparticleazimuthalcorrelationsinzbosontaggedppcollisionsats8and13tev
AT monticellifernandogabriel measurementoflongrangetwoparticleazimuthalcorrelationsinzbosontaggedppcollisionsats8and13tev
AT orellanagonzaloenrique measurementoflongrangetwoparticleazimuthalcorrelationsinzbosontaggedppcollisionsats8and13tev
AT wahlberghernanpablo measurementoflongrangetwoparticleazimuthalcorrelationsinzbosontaggedppcollisionsats8and13tev
AT theatlascollaboration measurementoflongrangetwoparticleazimuthalcorrelationsinzbosontaggedppcollisionsats8and13tev
bdutipo_str Repositorios
_version_ 1764820455440515073

Ejemplares similares