Abstract
Preliminary results of three different analyses are presented for the lightest collision systems studied in the energy-system size scan program of NA61/SHINE: two-particle correlations in p+p collisions at 20 – 158 GeV/c beam momentum, pseudorapidity correlations in Be+Be collisions at 150A GeV/c and transverse momentum and multiplicity fluctuations of charged particles in p+p (20 – 158 GeV/c) and Be+Be (19A – 150A GeV/c) collisions at the CERN SPS.
Highlights
The main goal of the NA61/SHINE fixed target experiment is to uncover properties of the onset of deconfinement by systematic study of collision energy and nuclear mass dependence of hadron production in the region of the threshold for quark-gluon plasma creation
Their study is widely used in current experiments (RHIC, LHC), as a tool to estimate the influence on multiplicity correlations of different particle sources in heavy ion collisions
All results were corrected for biases due to trigger, off-line selection, track and event selection etc. by using events obtained from the EPOS 1.99 model event generator and comparing results before and after GEANT detector simulation and reconstruction
Summary
The main goal of the NA61/SHINE fixed target experiment is to uncover properties of the onset of deconfinement by systematic study of collision energy and nuclear mass dependence of hadron production in the region of the threshold for quark-gluon plasma creation. The expected signal of the critical point is a non-monotonic dependence of fluctuation measures [8] on the energy and/or the size of the collision system
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