Abstract
Study of the strangeness production in heavy-ion collisions is one of the most important parts of the physics program of the MPD experiment at the NICA collider. Therefore, the problem of a reliable and efficient reconstruction of strange objects should be addressed with a high priority during the preparation to the experiment. The paper describes the approach to this task which was developed and implemented as a part of the MPD software. Some results of its application during the detector Monte Carlo feasibility studies are presented.
Highlights
The experimental investigation of the high-density nuclear matter equation of state is an important subject for present and future research with heavy-ion beams
The Multi-Purpose Detector (MPD) at the Nuclotronbased Ion Collider Facility (NICA) collider [2] is designed and being assembled to measure different probes, which will provide new information on the quantum chromodynamic (QCD) phase diagram at large baryonchemical potentials, including the high-density equation-of-state (EOS). √ Strangeness production is of particular interest at energies available at NICA
Some theoretical models predict that an enhancement of the strangeness production in heavy-ion collisions experimentally observed at SPS [3] and RHIC [4] in this energy range can be explained by the deconfinement phase transition, when multiple s − spairs are created via gluon fusion reactions, resulting in a higher yields of strangeness compared to that from a hadron gas scenario [5]
Summary
The experimental investigation of the high-density nuclear matter equation of state is an important subject for present and future research with heavy-ion beams. Short-lived strange objects such as resonances can serve as an important instrument to study properties of the hot and dense nuclear matter They are sensitive to the rescattering and regeneration processes occurring between the chemical and the kinetic freeze-out in heavy-ion collisions, as well as to some other phenomena [12]. In order to better understand the dynamics of hot and dense hadronic matter, in particular, the strangeness production mechanism, the Multipurpose Detector (MPD) experiment at the NICA collider, will provide new precise experimental data on the total yields, rapidity, transverse momentum, and azimuthal angle distributions of strange particles, including (anti)-hyperons and hypernuclei. The current status of such an activity is presented below
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