Global properties in O+O collisions at $\sqrt{s_{NN}}= 7 $ TeV using a multi-phase transport model

The primary goal of ultra-relativistic heavyion collision experiments is to study the nuclear matter and the phase transition of hadronic matter to quark-gluon plasma (QGP) under extreme conditions of high temperature and energy density. Results from small collision systems act as baseline for those results. Recent LHC studies show QGP-like behavior in high-multiplicity pp collisions [1, 2]. Since the system size of O+O collisions has overlap between p+Pb and pp collisions, studying global properties may give a deeper insight into the heavy-ion-like behaviour observed in small collision systems. Oxygen has very compact structure and it is assumed to be stable against decay because of doubly magic nucleus. Here, we report the Bjorken energy density, speed of sound and kinetic freeze-out parameters as a function of collision centrality in O+O collisions at √ sNN = 7 TeV for both harmonic oscillator and Woods-Saxon nuclear density profile incorporated in oxygen nucleus using AMPT.