Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/101870
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Type: Journal article
Title: Observation of associated near-side and away-side long-range correlations in √sNN = 5.02 TeV proton-lead collisions with the ATLAS detector
Other Titles: Observation of associated near-side and away-side long-range correlations in root sNN = 5.02 TeV proton-lead collisions with the ATLAS detector
Author: Aad, G.
ATLAS Collaboration
Citation: Physical Review Letters, 2013; 110(18):182302-1-182302-18
Publisher: American Physical Society
Issue Date: 2013
ISSN: 0031-9007
1079-7114
Statement of
Responsibility: 
G. Aad … P. Jackson … L. Lee … A. Petridis … N. Soni … M.J. White … et al. (ATLAS Collaboration)
Abstract: Two-particle correlations in relative azimuthal angle (Δϕ) and pseudorapidity (Δη) are measured in sNN−−−√=5.02  TeV p+Pb collisions using the ATLAS detector at the LHC. The measurements are performed using approximately 1  μb−1 of data as a function of transverse momentum (pT) and the transverse energy (ΣEPbT) summed over 3.1<η<4.9 in the direction of the Pb beam. The correlation function, constructed from charged particles, exhibits a long-range (2<|Δη|<5) “near-side” (Δϕ∼0) correlation that grows rapidly with increasing ΣEPbT. A long-range “away-side” (Δϕ∼π) correlation, obtained by subtracting the expected contributions from recoiling dijets and other sources estimated using events with small ΣEPbT, is found to match the near-side correlation in magnitude, shape (in Δη and Δϕ) and ΣEPbT dependence. The resultant Δϕ correlation is approximately symmetric about π/2, and is consistent with a dominant cos2Δϕ modulation for all ΣEPbT ranges and particle pT.
Keywords: ATLAS Collaboration; ATLAS Collaboration; ATLAS Collaboration
Rights: © 2013 CERN, for the ATLAS Collaboration Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
RMID: 0020133396
DOI: 10.1103/PhysRevLett.110.182302
Appears in Collections:Chemistry and Physics publications

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