Abstract
In this work, we will present beam energy and system size dependence of the higher order moments (skewness and kurtosis) of net-kaon and total proton multiplicity distributions for Au+Au collisions simulated using the UrQMD code.
Highlights
In this work, we will present beam energy and system size dependence of the higher order moments of net-kaon and total proton multiplicity distributions for Au+Au collisions simulated using the UrQMD code
Going from peripheral to central collisions, it is found that the event-by-event net-kaon distributions become wider and more symmetric for central collisions
The higher order moments of net-kaon and total proton multiplicity distributions from Au+Au collisions simulated using the UrQMD code in a broad energy range and different system sizes have been presented
Summary
We will present beam energy and system size dependence of the higher order moments (skewness and kurtosis) of net-kaon and total proton multiplicity distributions for Au+Au collisions simulated using the UrQMD code. We can probe this phase diagram with heavy ion collisions at different energies where the matter is heated and compressed. The fluctuations of the charge/baryon number/strangeness can be related to event-by-event moments of various observables in heavy-ion collisions. It is expected that the presence of fluctuations from the critical point may lead to a non-Gaussian shape in the event-by-event multiplicity distributions and non-monotonic behavior of the observables studied (such as higher order moments) [2]. Higher moments (skewness and kurtosis) of multiplicity distributions are proposed to provide one of the most sensitive probes towards the search for the CP because are conjectured to reflect the large fluctuations associated with the hadron-quark phase transition. In the last years the multiplicity moments have been intensively studied both experimentally [4,5,6]
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