Speaker
Ms
Yuuka Kanakubo
(Sophia University)
Description
Talk title: Dynamical core–corona picture from small to large colliding systems
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Speaker: Yuuka Kanakubo, Sophia University
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Abstract:
A possibility of quark-gluon plasma (QGP) formation in small colliding systems is implied by various experimental data. Focusing on one of the experimental 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 multiplicity/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 initialization 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 $⟨𝑑𝑁_{\rm ch}/𝑑𝜂⟩ \sim 10$.
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Self-introduction:
Yuuka Kanakubo, Ph.D. student at Sophia University in Tokyo, Japan. Master’s degree at Sophia University in 2019 under Prof. Tetsufumi Hirano. Awarded “Nuclear Physics A Elsevier Young Scientist Awards” at Quark Matter 2019. One of the main interests is to develop a unified framework to investigate various observables from small to large colliding systems.
