Abstract
Properties of nuclear matter can be studied by relativistic heavy-ion collisions in high-energy experiments like STAR. One of the methods to learn about properties of nuclear matter is femtoscopy, which relies on information carried by particles produced in the collisions. Using femtoscopic observables, space-time characteristics of the source can be extracted. During heavy-ion collisions mostly pions are produced, and therefore pion femtoscopy is a particularly useful tool. High statistics data sets from RHIC have also made it possible to study the strange particle correlations. The lightest strange hadrons are charged and neutral kaons. The strong interaction, which conserves the strangeness quantum number, is responsible for the kaon production. It is possible to study the neutral kaons, $$K_{S}^{0}$$, which can be measured through their decay products to charged pions. In these proceedings, one-dimensional correlation functions of neutral kaon pairs in Au + Au collisions at $$\sqrt {{{s}_{{NN}}}} $$ = 200 GeV measured by the STAR experiment at RHIC are presented.
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