Measurements of longrange 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 MEASUREMENTS of LONGRANGE AZIMUTHAL ...
(2017) In Physical Review C: covering nuclear physics 96(2). Abstract
 ATLAS measurements of twoparticle 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 η2, is studied using a template fitting procedure to remove a "backtoback" contribution to the correlation function that primarily arises from hardscattering 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... (More)
 ATLAS measurements of twoparticle 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 η2, is studied using a template fitting procedure to remove a "backtoback" contribution to the correlation function that primarily arises from hardscattering 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=24 are measured as a function of chargedparticle multiplicity and chargedparticle transverse momentum. The Fourier coefficients are observed to be compatible with cos(nφ) modulation of perevent singleparticle azimuthal angle distributions. The singleparticle Fourier coefficients vn are measured as a function of chargedparticle multiplicity, and chargedparticle transverse momentum for n=24. The integrated luminosities used in this analysis are, 64 nb1 for the s=13 TeV pp data, 170 nb1 for the s=5.02 TeV pp data, and 28 nb1 for the sNN=5.02 TeV p+Pb data. © 2017 CERN. (Less)
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 publishing date
 2017
 type
 Contribution to journal
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 published
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 in
 Physical Review C: covering nuclear physics
 volume
 96
 issue
 2
 article number
 024908
 publisher
 American Physical Society
 external identifiers

 scopus:85028862324
 ISSN
 24699985
 DOI
 10.1103/PhysRevC.96.024908
 language
 English
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 Export Date: 27 September 2017
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 22c5cd4a509b4731ba246f23573588ad
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@article{22c5cd4a509b4731ba246f23573588ad, abstract = {ATLAS measurements of twoparticle 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 η2, is studied using a template fitting procedure to remove a "backtoback" contribution to the correlation function that primarily arises from hardscattering 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=24 are measured as a function of chargedparticle multiplicity and chargedparticle transverse momentum. The Fourier coefficients are observed to be compatible with cos(nφ) modulation of perevent singleparticle azimuthal angle distributions. The singleparticle Fourier coefficients vn are measured as a function of chargedparticle multiplicity, and chargedparticle transverse momentum for n=24. The integrated luminosities used in this analysis are, 64 nb1 for the s=13 TeV pp data, 170 nb1 for the s=5.02 TeV pp data, and 28 nb1 for the sNN=5.02 TeV p+Pb data. © 2017 CERN.}, author = {Aaboud, M and Aad, G and Abbott, B. and Abdallah, J and Abdinov, O and Abeloos, B and Åkesson, Torsten and Bocchetta, Simona and Doglioni, Caterina and Hedberg, Vincent and Jarlskog, Göran and Lytken, Else and Mjörnmark, Ulf and Smirnova, Oxana and Viazlo, Oleksandr}, issn = {24699985}, language = {eng}, number = {2}, publisher = {American Physical Society}, series = { Physical Review C: covering nuclear physics}, title = {Measurements of longrange 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 MEASUREMENTS of LONGRANGE AZIMUTHAL ...}, url = {http://dx.doi.org/10.1103/PhysRevC.96.024908}, doi = {10.1103/PhysRevC.96.024908}, volume = {96}, year = {2017}, }