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Searches for transverse momentum dependent flow vector fluctuations in Pb-Pb and p-Pb collisions at the LHC
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Searches for transverse momentum dependent flow vector fluctuations in Pb-Pb and p-Pb collisions at the LHC

S. Acharya, D. Adamová, J. Adolfsson, M.M. Aggarwal, G. Aglieri Rinella, M. Agnello, N. Agrawal, Z. Ahammed, N. Ahmad, S.U. Ahn, …
Journal of High Energy Physics, 卷.2017(9), 32
09/2017

摘要

Heavy Ion Experiments Nuclear and High Energy Physics
The measurement of azimuthal correlations of charged particles is presented for Pb-Pb collisions at s <sub>NN</sub> =2.76 TeV and p-Pb collisions at s <sub>NN</sub> =5.02 TeV with the ALICE detector at the CERN Large Hadron Collider. These correlations are measured for the second, third and fourth order flow vector in the pseudorapidity region |η| < 0.8 as a function of centrality and transverse momentum p <sub>T</sub> using two observables, to search for evidence of p <sub>T</sub> -dependent flow vector fluctuations. For Pb-Pb collisions at 2.76 TeV, the measurements indicate that p <sub>T</sub> -dependent fluctuations are only present for the second order flow vector. Similar results have been found for p-Pb collisions at 5.02 TeV. These measurements are compared to hydrodynamic model calculations with event-by-event geometry fluctuations in the initial state to constrain the initial conditions and transport properties of the matter created in Pb–Pb and p–Pb collisions.[Figure not available: see fulltext.].

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https://doi.org/10.1007/JHEP09(2017)032檢視
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