Event Topology Reconstruction in the CBM Experimentстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 29 сентября 2021 г.
Аннотация:. One of the main purposes of the physics program of the future heavy ion experiment
CBM (FAIR, Germany) is to understand the properties of strongly interacting matter at very
high baryonic densities and to study the possibility of a phase transition to a deconfined and
chirally restored phase of quark matter. The experiment will operate at high interaction rates
up to 10 MHz, that requires a full event reconstruction in real time.
In order to make an efficient event selection online a clean sample of particles has to be
provided by the reconstruction package called First Level Event Selection (FLES). The FLES
package operates in two stages. First, particles registered in the CBM detector system are
reconstructed. Then short-lived particles decayed before or inside the setup are searched based
on their charged and neutral daughter particles. Since the FLES package is developed to run
on many-core computer architectures, the reconstruction of particles is done in parallel that
provides a possibility for a global competition between particle candidates. Such a global event
topology reconstruction significantly improves suppression of a combinatorial background and
provides for further physics analysis a very clean sample of particles produced at different stages
of heavy ion collision.
The global event topology reconstruction procedure and the results of its application to
simulated collisions in the CBM detector setup are presented and discussed.