Transverse momentum and process dependent azimuthal anisotropies in root S-NN=8.16 TeV p plus Pb collisions with the ATLAS detector [Elektronisk resurs]
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Aaboud, M. (författare)
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Asimakopoulou, Eleni M. (författare)
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Bergeås Kuutmann, Elin, 1980- (författare)
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Bokan, Petar (författare)
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Brenner, Richard (författare)
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Ekelöf, Tord (författare)
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Ellajosyula, Venugopal (författare)
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Ellert, Mattias (författare)
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Ferrari, Arnaud, 1973- (författare)
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Gradin, P. O. Joakim (författare)
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Isacson, Max (författare)
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Mårtensson, Mikael U. F. (författare)
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Sales De Bruin, Pedro (författare)
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Zwalinski, L. (författare)
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Uppsala universitet Teknisk-naturvetenskapliga vetenskapsområdet (utgivare)
- Publicerad: SPRINGER, 2020
- Engelska.
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Ingår i: European Physical Journal C. - 1434-6044. ; 80
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- The azimuthal anisotropy of charged particles produced in sNN=8.16TeV 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 pTintervals. 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 pTrange 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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- Physical Sciences (hsv)
- Subatomic Physics (hsv)
- Naturvetenskap (hsv)
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European Physical Journal C