Investigating correlated fluctuations of conserved charges with net-Λ fluctuations in Pb–Pb collisions at ALICE
Özet
Event-by-event fluctuations of conserved charges such as electric
charge, strangeness, and baryon number - in ultrarelativistic heavy-ion
collisions provide insight into the properties of the quark-gluon plasma
and the QCD phase diagram. They can be related to the higher moments of
the multiplicity distributions of identified particles, such as the A
baryon which carries both strangeness and baryon number and is thus of
particular interest. We present the first measurement of net-A
fluctuations in Pb-Pb collisions at root s(NN)=5.02 TeV as a function of
centrality and the pseudorapidity acceptance of the measurement. The
results are compared to expectations of the effects of global baryon
number conservation as well as to predictions from the HIJING Monte
Carlo event generator. In this analysis the Identity Method is applied
in a novel way to account for the combinatoric background in the
invariant mass distribution.
Koleksiyonlar
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