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https://hdl.handle.net/2440/81620
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Type: | Journal article |
Title: | Measurement with the ATLAS detector of multi-particle azimuthal correlations in p+Pb collisions at √sNN= 5.02 TeV |
Other Titles: | Measurement with the ATLAS detector of multi-particle azimuthal correlations in p+Pb collisions at root sNN= 5.02 TeV |
Author: | Jackson, P. Soni, N. White, M. |
Citation: | Physics Letters B: Nuclear Physics and Particle Physics, 2013; 725(1-3):60-78 |
Publisher: | Elsevier Science BV |
Issue Date: | 2013 |
ISSN: | 0370-2693 1873-2445 |
Contributor: | Jackson, Paul Douglas Soni, Nitesh White, Martin |
Statement of Responsibility: | ATLAS Collaboration |
Abstract: | In order to study further the long-range correlations ("ridge") observed recently in p+Pb collisions at sNN=5.02TeV, the second-order azimuthal anisotropy parameter of charged particles, v2, has been measured with the cumulant method using the ATLAS detector at the LHC. In a data sample corresponding to an integrated luminosity of approximately 1μb⁻¹, the parameter v2 has been obtained using two- and four-particle cumulants over the pseudorapidity range |η|<2.5. The results are presented as a function of transverse momentum and the event activity, defined in terms of the transverse energy summed over 3.1<η<4.9 in the direction of the Pb beam. They show features characteristic of collective anisotropic flow, similar to that observed in Pb+Pb collisions. A comparison is made to results obtained using two-particle correlation methods, and to predictions from hydrodynamic models of p+Pb collisions. Despite the small transverse spatial extent of the p+Pb collision system, the large magnitude of v2 and its similarity to hydrodynamic predictions provide additional evidence for the importance of final-state effects in p+Pb reactions. |
Description: | ATLAS Collaboration members: P. Jackson, N. Soni, M.J. White for the University of Adelaide, South Australia. |
Rights: | © 2013 CERN. |
DOI: | 10.1016/j.physletb.2013.06.057 |
Published version: | http://dx.doi.org/10.1016/j.physletb.2013.06.057 |
Appears in Collections: | Aurora harvest 4 Chemistry and Physics publications |
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hdl_81620.pdf | Published version | 741.35 kB | Adobe PDF | View/Open |
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