Monte Carlo generators for relativistic heavy-ion collisions have non-standardize output formats. Thus, data that are simulated by different generators require different processing techniques. To ...resolve this issue, a unified storage format with an interface to read and process data is implemented. Unification should be interpreted as the ability to convert any generator output into discussed format. The presented cross-platform solution, McDst software library, is developed on the object–oriented paradigm using C++ language and CERN ROOT libraries. It is distributed in a form of source code and can be extended by end–user. The structure of the format and use cases for the library are presented.
A software infrastructure for analysis of experimental data in high energy physics is tightly connected with the specifics of the experiment: detector setup, collision system, reconstructed event and ...track information. However the aspects of physics analysis are common for different experiments. This fact suggests the development of a universal (in terms of independence from experiments) software, which may be helpful in a number of research cases. A framework for correlation femtoscopy technique, that could be applicable for any experiment, is presented in this work. A polymorphic behavior of the framework encapsulates the data differences, providing a universal way to manage analyses. C++ language and CERN ROOT libraries are used for implementation.
Abstract
Brookhaven National Laboratory (BNL) is a multipurpose research center that primarily supported by the U.S. Department of Energy (DOE) Office of Science. BNL operates cutting-edge ...large-scale facilities for studies in physics, chemistry, biology, medicine, applied science, and a wide range of advanced technologies. Relativistic Heavy Ion Collider (RHIC) is a megascience facility at BNL that allows to conduct research in nuclear and particle physics. In these proceedings, we will review the current status and future prospects of the megascience complex RHIC.
The two-particle correlations at low relative momenta (correlation femtoscopy) are sensitive to quantum statistics and allow to measure the space-time picture of the system evolution created in ...lieavy-ion (HI) and particle collisions. The spatio-temporal parameters extracted from HI collisions describe the system at the last moment of the collision evolution - kinetic freeze-out. and provide the essential information about the formation of the quark-gluon plasma. The measurements at many facilities showed the dependencies of the spacial scales from the event multiplicity and particle transverse mass,mT. In this paper we show recent results obtained at RHIC and LHC energies and compare them to the theoretical expectations.
The femtoscopy technique allows one to measure the spatial and temporal scales of the particle-emitting source produced in high-energy collisions. In non-central ultra-relativistic heavy-ion ...collisions, emitting source may be tilted in the reaction plane. The orientation of freeze-out distributions is interesting because it provides complementary information about quark-gluon matter properties. In the experiment, the tilt can be extracted by measuring femtoscopic radii as a function of the pair angle with respect to the first-order event plane. In this talk, we will present results of azimuthally sensitive femtoscopic analysis of Au+Au and Cu+Au collisions at sNN=200GeV. We will also present the transverse momentum and multiplicity dependence of identical pion femtoscopic radii from d+Au, 3He+Au collisions at sNN=200GeV. All data was obtained from the UrQMD model.
Heavy-ion collisions provide information about the properties of the matter under extreme conditions. Measurement of strangeness production properties provides important information about the ...collision region evolution. The spatial and temporal characteristics of particle emission can be extracted using femtoscopy technique. The collision energy, centrality, and transverse mass dependence of the three-dimensional charged kaon femtoscopic radii for Au + Au collisions in the Beam Energy Scan program is presented.
The method of correlation femtoscopy makes it possible to estimate the parameters of the particle-emitting region (radius of emission region,
, and correlation strength,
). Measurement of femtoscopic ...radius dependence on transverse momentum of particle pairs,
, is an important tool for studying the dynamics of the emission process. This work is devoted to the study of momentum correlations of identical pions produced in Au
Au collisions at
GeV using the UrQMD (Ultrarelativistic Quantum Molecular Dynamics) model. Three-dimensional femtoscopic analysis was performed as a function of
, rapidity and collision centrality. Physical implications will be discussed.
Various physics analyses in high-energy heavy-ion collisions demand to acquire and process low-level information from different detector subsystems, perform track reconstruction and keep results in ...some data format. We present a structure of compact data format for the MPD experiment at the NICA collider. In addition, results of software developments for femtoscopic analysis that allows one to extract spatial and temporal properties of the particle-emitting source created in relativistic heavy-ion collisions are reviewed.
We report the measurement of the one-dimensional charged kaon correlation functions using 600GeV/cΣ−, π− and 540GeV/cp beams from the SELEX (E781) experiment at the Fermilab Tevatron. K±K± ...correlation functions are studied for three transverse pair momentum, kT, ranges and parameterized by a Gaussian form. The emission source radii, R, and the correlation strength, λ, are extracted. The analysis shows a decrease of the source radii with increasing kaon transverse pair momentum for all beam types.