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Seminar in Hadronic PhysicsDynamical core–corona picture from small to large colliding systemsYuuka KanakuboSophia UniversityA possibility of quark-gluon plasma (QGP) formation in small colliding systems is implied by various experimental data. Focusing on one of the experimen- tal data, strangeness-enhancement, we investigate this possibility through the dynamical core–corona initialization (DCCI) model. The core–corona is a two-component picture proposed to study multiplic- ity/centrality dependence of final hadron yield ratios. Conventionally high- density regions in which the thermalized matter is generated are referred to as core, and low-density regions in which no such thermalization occurs are referred to as corona. Introducing the core–corona picture into the dynamical initial- ization framework, we demonstrate a dynamical separation of core and corona. In our framework, QGP fluids are generated by traversing partons produced at an initial stage of a nuclear collision. At the end of dynamical separation, the generated medium becomes an initial condition of hydrodynamics (core) and surviving partons (corona) undergo string fragmentation.In this seminar, I give an overview of concepts and detailed modeling of the DCCI and show results of particle yield ratios as a function of multiplicity in p-p, p-Pb and Pb-Pb collisions. I report there is a possibility of partial QGP formation even in p-p collisions with dNch/dη ~ 10.
Wednesday, January 27th 2021, 9:00
Tele-seminar |