https://doi.org/10.1051/epjconf/202227405003
Event-by-event correlations and fluctuations with strongly intensive quantities in heavy-ion collisions with ALICE
Institute of Nuclear Physics, Polish Academy of Sciences
* e-mail: iwona.sputowska@cern.ch
Published online: 22 December 2022
The strongly intensive quantity Σ is a new observable, introduced recently to the domain of heavy-ion physics. In superposition models which assume independent particle production from statistically identical sources, Σ is insensitive to the number of sources and its fluctuations, contrary to the standard forward-backward correlation coefficient (bcorr). Therefore it provides direct information on the multiplicity correlations and fluctuations from a single source. This paper presents new results on forward-backward correlations studied with the quantity Σ, measured by ALICE at the LHC in Xe–Xe collisions at √sNN = 5.44 TeV and in Pb–Pb collisions at √sNN = 2.76 and 5.02 TeV. These results are compared with ALICE measurements in pp collisions at √s = 13 TeV.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
