Energy dependence of particle ratio fluctuations in central Pb+Pb collisions from $\sqrt{s_{{}_{NN}}}=$~6.3 to 17.3 GeV

NA49 Collaboration

We present measurements of the energy dependence of event-by-event fluctuations in the K/pi and (p + \bar{p})/pi multiplicity ratios in heavy ion collisions at the CERN SPS. The pa…