Measurements of long-range azimuthal anisotropies and associated Fourier coefficients for pp collisions at √s =5.02 and 13 TeV and p+Pb collisions at √sNN =5.02 TeV with the ATLAS detector

ATLAS measurements of two-particle correlations are presented for √s=5.02 and 13 TeV pp collisions and for √sNN=5.02 TeV p+Pb collisions at the LHC. The correlation functions are measured as a function of relative azimuthal angle Δφ, and pseudorapidity separation Δη, using charged particles detected...

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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
Azimuthal anisotropies
Proton–proton collisions
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/87236
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-87236
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Azimuthal anisotropies
Proton–proton collisions
spellingShingle Física
Azimuthal anisotropies
Proton–proton collisions
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 long-range azimuthal anisotropies and associated Fourier coefficients for pp collisions at √s =5.02 and 13 TeV and p+Pb collisions at √sNN =5.02 TeV with the ATLAS detector
topic_facet Física
Azimuthal anisotropies
Proton–proton collisions
description ATLAS measurements of two-particle correlations are presented for √s=5.02 and 13 TeV pp collisions and for √sNN=5.02 TeV p+Pb collisions at the LHC. The correlation functions are measured as a function of relative azimuthal angle Δφ, and pseudorapidity separation Δη, using charged particles detected within the pseudorapidity interval |η|<2.5. Azimuthal modulation in the long-range component of the correlation function, with |Δη|>2, is studied using a template fitting procedure to remove a "back-to-back" contribution to the correlation function that primarily arises from hard-scattering processes. In addition to the elliptic, cos(2Δφ), modulation observed in a previous measurement, the pp correlation functions exhibit significant cos(3Δφ) and cos(4Δφ) modulation. The Fourier coefficients vn,n associated with the cos(nΔφ) modulation of the correlation functions for n=2-4 are measured as a function of charged-particle multiplicity and charged-particle transverse momentum. The Fourier coefficients are observed to be compatible with cos(nφ) modulation of per-event single-particle azimuthal angle distributions. The single-particle Fourier coefficients vn are measured as a function of charged-particle multiplicity, and charged-particle transverse momentum for n=2-4. The integrated luminosities used in this analysis are, 64 nb-1 for the √s=13 TeV pp data, 170 nb-1 for the √s=5.02 TeV pp data, and 28 nb-1 for the √sNN=5.02 TeV p+Pb data.
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 long-range azimuthal anisotropies and associated Fourier coefficients for pp collisions at √s =5.02 and 13 TeV and p+Pb collisions at √sNN =5.02 TeV with the ATLAS detector
title_short Measurements of long-range azimuthal anisotropies and associated Fourier coefficients for pp collisions at √s =5.02 and 13 TeV and p+Pb collisions at √sNN =5.02 TeV with the ATLAS detector
title_full Measurements of long-range azimuthal anisotropies and associated Fourier coefficients for pp collisions at √s =5.02 and 13 TeV and p+Pb collisions at √sNN =5.02 TeV with the ATLAS detector
title_fullStr Measurements of long-range azimuthal anisotropies and associated Fourier coefficients for pp collisions at √s =5.02 and 13 TeV and p+Pb collisions at √sNN =5.02 TeV with the ATLAS detector
title_full_unstemmed Measurements of long-range azimuthal anisotropies and associated Fourier coefficients for pp collisions at √s =5.02 and 13 TeV and p+Pb collisions at √sNN =5.02 TeV with the ATLAS detector
title_sort measurements of long-range azimuthal anisotropies and associated fourier coefficients for pp collisions at √s =5.02 and 13 tev and p+pb collisions at √snn =5.02 tev with the atlas detector
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/87236
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