Abstract
Collisions of small systems such as p/d/3He+Au are important for the investigation of quark-gluon plasma (QGP) in relativistic heavy ion collisions. These experiments distinguish the effects of the initial state of cold nuclear and the final state of hot matter. The research of light hadron production is one of the leading directions in the effects of the cold and hot nuclear matter studies. Due to a short lifetime and strange quark content, the K *0-meson is sensitive to the properties of the hot dense matter and strangeness production from an early partonic phase (i.e. QGP). This report presents invariant transverse momentum spectra and nuclear modification factors (RHeAu ) of K *0-meson as a function of pT measured in 3He+Au collisions at by the PHENIX experiment. In results, the nuclear modification factors for K *0-meson in d+Au and 3He+Au collisions are in a good agreement. Values of RHeAu for K *0, φ, and π 0 mesons are equal within uncertainties in all centrality bins in the whole pT range. In conclusion, the obtained results might indicate that CNM effects are not responsible for the differences of K *0 and φ to π 0 suppression level seen in heavy ion collisions.
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