Production of K*(892)° mesons in Cu+Au collisions at sNN = 200 GeV and U+U collisions at sNN = 192 GeV

Abstract

Abstract Studying the properties and evolution of the QGP is one of the main goals in modern heavy ion physics. Due to strange quark content K*0 meson is a good probe for the study of QGP formed in heavy-ion collisions. K *0-meson production was previously measured by PHENIX in symmetric Cu+Cu collisions at s N N = 200 GeV and U+U collisions at s N N = 200 GeV. K *0-meson production in asymmetric Cu+Au collisions at s N N = 200 GeV and U+U collisions at s N N = 200 GeV and spherically asymmetric uranium nuclei at s N N = 200 GeV and U+U collisions at s N N = 192 GeV was performed for continuation the study of the QGP properties. This report presents invariant transverse momentum spectra and nuclear modification factors of K *0-mesons which were measured in Cu+Au collisions at the energy of s N N = 200 GeV and U+U collisions at s N N = 200 GeV and U+U collisions at the energy of s N N = 200 GeV and U+U collisions at s N N = 192 GeV. In results, K *0-mesons yields are less suppressed than the yields of non-strange mesons, which might indicate that additional particle production mechanisms are involved in the K *0-meson production. The production of the K *0-mesons in Cu+Cu, Cu+Au, and U+U collisions scales with Npart and seems to depend on nuclear overlap size, but not on its geometry.