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arXiv · 1412.6204

Multiplicity fluctuations at the quark-hadron phase transition from a fluid dynamical model

Christoph Herold·Marlene Nahrgang·Yupeng Yan·Chinorat Kobdaj
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Abstract

The region of large net-baryon densities in the QCD phase diagram is expected to exhibit a first-order phase transition. Experimentally, its study will be one of the primaryobjectives for the upcoming FAIR accelerator. We model the transition between quarks and hadrons in a heavy-ion collision using a fluid which is coupled to the explicit dynamics of the chiral order parameter and a dilaton field. This allows us to investigate signals stemming from the nonequilibrium evolution during the expansion of the hot plasma. Special emphasis is put on an event-by-event analysis of baryon number fluctuations which have long since been claimed to be sensitive to a critical point.

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Christoph Herold, Marlene Nahrgang, Yupeng Yan, Chinorat Kobdaj. 2014-12-19. Multiplicity fluctuations at the quark-hadron phase transition from a fluid dynamical model. https://doi.org/10.1088/1742-6596%2F599%2F1%2F012012

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