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Relative particle yield fluctuations in $$\text{ Pb--Pb }$$ Pb--Pb collisions at $$\sqrt{s_\mathrm{{NN}}} =2.76\hbox { TeV}$$ s NN = 2.76 TeV
First results on K/$π$, p/$π$ and K/p fluctuations are obtained with the ALICE detector at the CERN LHC as a function of centrality in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV. The observable $ν_{\rm dyn}$, which is defined in terms of the moments of particle multiplicity distributions, is used to quantify …