98 research outputs found
Overview of light nuclei production in relativistic heavy-ion collisions
We briefly overview motivations, some recent results and challenges in
studying light nuclei production in relativistic heavy ion collisions.Comment: Proceedings of Quark Matter 2019 conferenc
The QCD phase diagram and statistics friendly distributions
The preliminary STAR data for proton cumulants for central collisions at s=7.7GeV component proton multiplicity distribution. We show that this two-component distribution is statistics friendly in that factorial cumulants of surprisingly high orders may be extracted with a relatively small number of events. As a consequence the two-component model can be tested and verified right now with the presently available STAR data from the first phase of the RHIC beam energy scan
Bimodality Phenomenon in Finite and Infinite Systems Within an Exactly Solvable Statistical Model
We present a few explicit counterexamples to the widely spread belief about
an exclusive role of the bimodal nuclear fragment size distributions as the
first order phase transition signal. In thermodynamic limit the bimodality may
appear at the supercritical temperatures due to the negative values of the
surface tension coefficient. Such a result is found within a novel exactly
solvable formulation of the simplified statistical multifragmentation model
based on the virial expansion for a system of the nuclear fragments of all
sizes. The developed statistical model corresponds to the compressible nuclear
liquid with the tricritical endpoint located at one third of the normal nuclear
density. Its exact solution for finite volumes demonstrates the bimodal
fragment size distribution right inside the finite volume analog of a gaseous
phase. These counterexamples clearly demonstrate the pitfalls of Hill approach
to phase transitions in finite systems.Comment: Talk given at the Helmholtz International Summer School "Physics of
Heavy Quarks and Hadrons", held in Dubna, Russia, July 15-28, 201
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