Speaker
Description
The question whether or not small systems form a QGP has remained unresolved for the past decade. In the soft sector, hydrodynamic modelling can describe experimental data, but with large error bars. In the near future, collisions of O-16 nuclei will provide new experimental data in a system which is theoretically under more control than for example pPb. However, theoretical uncertainties remain. In this work we propose to collide Ne-20 in addition to O-16. Ne-20 is of a similar size, but has a radically different shape. This shape difference allows for a precise control of the initial geometry of the QGP (if it is indeed formed), and therefore leads to a large cancellation of theoretical uncertainties in bulk observables. This allows for predictions from hydrodynamics to be made on the level of a few percent uncertainty, giving us a precision tool to understand whether small systems behave hydrodynamically. In addition, the radical difference in the shape of the QGP droplet between the two systems creates a different environment for hard probes to traverse. We will show how the path length traversed by hard probes is affected by this geometry.
| Category | Theory |
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