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Transverse momentum and process dependent azimuthal anisotropies in √sNN=8.16 TeV p+Pb collisions with the ATLAS detector

Publication ,  Journal Article
Aad, G; Abbott, B; Abbott, DC; Abud, AA; Abeling, K; Abhayasinghe, DK; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, H; Abreu, H; Adam, L ...
Published in: European Physical Journal C
January 1, 2020

The azimuthal anisotropy of charged particles produced in sNN=8.16 TeV p+Pb collisions is measured with the ATLAS detector at the LHC. The data correspond to an integrated luminosity of 165 nb - 1 that was collected in 2016. Azimuthal anisotropy coefficients, elliptic v2 and triangular v3, extracted using two-particle correlations with a non-flow template fit procedure, are presented as a function of particle transverse momentum (pT) between 0.5 and 50 GeV. The v2 results are also reported as a function of centrality in three different particle pT intervals. The results are reported from minimum-bias events and jet-triggered events, where two jet pT thresholds are used. The anisotropies for particles with pT less than about 2 GeV are consistent with hydrodynamic flow expectations, while the significant non-zero anisotropies for pT in the range 9–50 GeV are not explained within current theoretical frameworks. In the pT range 2–9 GeV, the anisotropies are larger in minimum-bias than in jet-triggered events. Possible origins of these effects, such as the changing admixture of particles from hard scattering and the underlying event, are discussed.

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Published In

European Physical Journal C

DOI

EISSN

1434-6052

ISSN

1434-6044

Publication Date

January 1, 2020

Volume

80

Issue

1

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

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Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., … Arduh, F. A. (2020). Transverse momentum and process dependent azimuthal anisotropies in √sNN=8.16 TeV p+Pb collisions with the ATLAS detector. European Physical Journal C, 80(1). https://doi.org/10.1140/epjc/s10052-020-7624-4
Aad, G., B. Abbott, D. C. Abbott, A. A. Abud, K. Abeling, D. K. Abhayasinghe, S. H. Abidi, et al. “Transverse momentum and process dependent azimuthal anisotropies in √sNN=8.16 TeV p+Pb collisions with the ATLAS detector.” European Physical Journal C 80, no. 1 (January 1, 2020). https://doi.org/10.1140/epjc/s10052-020-7624-4.
Aad G, Abbott B, Abbott DC, Abud AA, Abeling K, Abhayasinghe DK, et al. Transverse momentum and process dependent azimuthal anisotropies in √sNN=8.16 TeV p+Pb collisions with the ATLAS detector. European Physical Journal C. 2020 Jan 1;80(1).
Aad, G., et al. “Transverse momentum and process dependent azimuthal anisotropies in √sNN=8.16 TeV p+Pb collisions with the ATLAS detector.” European Physical Journal C, vol. 80, no. 1, Jan. 2020. Scopus, doi:10.1140/epjc/s10052-020-7624-4.
Aad G, Abbott B, Abbott DC, Abud AA, Abeling K, Abhayasinghe DK, Abidi SH, AbouZeid OS, Abraham NL, Abramowicz H, Abreu H, Abulaiti Y, Acharya BS, Achkar B, Adachi S, Adam L, Bourdarios CA, Adamczyk L, Adamek L, Adelman J, Adersberger M, Adiguzel A, Adorni S, Adye T, Affolder AA, Afik Y, Agapopoulou C, Agaras MN, Aggarwal A, Agheorghiesei C, Aguilar-Saavedra JA, Ahmadov F, Ahmed WS, Ai X, Aielli G, Akatsuka S, Åkesson TPA, Akilli E, Akimov AV, Khoury KA, Alberghi GL, Albert J, Verzini MJA, Alderweireldt S, Aleksa M, Aleksandrov IN, Alexa C, Alexopoulos T, Alfonsi A, Alfonsi F, Alhroob M, Ali B, Aliev M, Alimonti G, Allaire C, Allbrooke BMM, Allen BW, Allport PP, Aloisio A, Alonso F, Alpigiani C, Alshehri AA, Estevez MA, Alviggi MG, Coutinho YA, Ambler A, Ambroz L, Amelung C, Amidei D, Santos SPAD, Amoroso S, Amrouche CS, An F, Anastopoulos C, Andari N, Andeen T, Anders CF, Anders JK, Andreazza A, Andrei V, Anelli CR, Angelidakis S, Angerami A, Anisenkov AV, Annovi A, Antel C, Anthony MT, Antipov E, Antonelli M, Antrim DJA, Anulli F, Aoki M, Pozo JAA, Bella LA, Araque JP, Ferraz VA, Pereira RA, Arcangeletti C, Arce ATH, Arduh FA. Transverse momentum and process dependent azimuthal anisotropies in √sNN=8.16 TeV p+Pb collisions with the ATLAS detector. European Physical Journal C. 2020 Jan 1;80(1).
Journal cover image

Published In

European Physical Journal C

DOI

EISSN

1434-6052

ISSN

1434-6044

Publication Date

January 1, 2020

Volume

80

Issue

1

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 5101 Astronomical sciences
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics