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

Autor: Acharya, S., Adamová, D., Adolfsson, J., Aggarwal, M., Aglieri Rinella, G., Agnello, M., Agrawal, N., Ahammed, Z., Ahmad, N., Ahn, S., Aiola, S., Akindinov, A., Alam, S., Alba, J., Albuquerque, D., Aleksandrov, D., Alessandro, B., Alfaro Molina, R., Alici, A., Alkin, A.
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Zdroj: Journal of High Energy Physics; Sep2017, Vol. 2017 Issue 9, p1-33, 33p
Abstrakt: The measurement of azimuthal correlations of charged particles is presented for Pb-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=2.76 $$ TeV and p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ 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 using two observables, to search for evidence of p -dependent flow vector fluctuations. For Pb-Pb collisions at 2.76 TeV, the measurements indicate that p -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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index