Abstract

Two boson intensity interferometry (also known as Hanbury-Brown–Twiss, or HBT (Brown R Hanbury and Twiss R Q 1956 Nature 178 1046)) offers information on the spacetime structure of the particle-emitting source created in heavy-ion collisions. Kaon HBT has been suggested as a promising probe of quark–gluon plasma and reveals strangeness dynamics. Small contributions from resonance decays make kaon HBT an ideal tool for correlation studies. In conjunction with pion correlation measurements, they can also reveal properties of collective dynamics in heavy-ion collisions. We present preliminary results on neutral and charged kaon correlations in GeV Au–Au collisions measured by the STAR Collaboration at the relativistic heavy ion collider.

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