Three-fluid Hydrodynamics-based Event Simulator Extended by UrQMD final State interactions (THESEUS) for FAIR-NICA-SPSBES/RHIC energies

We present a new event generator based on the three-fluid hydrodynamics (3FH) approach, followed by a particlization at the hydrodynamic decoupling surface and a subsequent UrQMD afterburner stage based on the microscopic UrQMD transport model that accounts for hadronic final state interactions. First results for Au+Au collisions are presented. The following topics are addressed: the directed flow, transversemass spectra, as well as rapidity distributions of protons, pions and kaons for two model equations of state, one with a first-order phase transition, the other with a crossover transition. Preliminary results on the femtoscopy are also discussed.We analyze the accuracy of reproduction of the 3FH results by the new event generator and the effect of the subsequent UrQMD afterburner stage.

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Correlation femtoscopy at NICA energies

EPJ Web of Conferences ◽

10.1051/epjconf/201922202004 ◽

2019 ◽

Vol 222 ◽

pp. 02004

Author(s):

Konstantin Mikhaylov ◽

Pavel Batyuk ◽

Olga Kodolova ◽

Lyudmila Malinina ◽

Grigory Nigmatkulov ◽

...

Keyword(s):

Particle Production ◽

Final State ◽

High Energies ◽

Physics Program ◽

First Order Phase Transition ◽

Low Energies ◽

Theoretical Predictions ◽

Final State Interactions ◽

First Order Phase ◽

Beam Energy Scan

The space-time characteristics of particle production are measured by the correlation femtoscopy with use of quantum statistics (QS) and final state interactions (FSI) effects. Femtoscopy at lower energy was a key of importance at AGS, SPS and in the Beam Energy Scan (BES) physics program at RHIC. Using femtoscopy observables we investigate possibilities to observe a difference from the first-order phase transition expected, according to some theoretical predictions, at low energies and the cross over one, to be occurred at high energies. The hybrid model vHLLE+UrQM is used as a baseline for this study. The possibilities to use kaon femtoscopy complementary to the usually used pion one are discussed.

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Final State Interactions model in NuWro Monte Carlo event generator

10.1063/1.3661589 ◽

2011 ◽

Cited By ~ 1

Author(s):

Tomasz Golan ◽

Cezary Juszczak ◽

Jan T. Sobczyk ◽

S. K. Singh ◽

J. G. Morfin ◽

...

Keyword(s):

Monte Carlo ◽

Monte Carlo Event ◽

Event Generator ◽

Final State ◽

Monte Carlo Event Generator ◽

Final State Interactions

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HADRON ATTENUATION AT HERMES BY (PRE)HADRONIC FSI

International Journal of Modern Physics A ◽

10.1142/s0217751x05021944 ◽

2005 ◽

Vol 20 (02n03) ◽

pp. 615-617

Author(s):

K. GALLMEISTER ◽

W. CASSING ◽

T. FALTER ◽

U. MOSEL

Keyword(s):

Transport Model ◽

High Energy ◽

Quantum Mechanical ◽

Hadronic Final State ◽

Initial State ◽

Final State ◽

Quantum Mechanical Treatment ◽

Final State Interactions ◽

Coupled Channel ◽

Hadron Formation

We investigate hadron formation in high energy electroproduction off complex nuclei in the framework of a BUU transport model. Our approach combines a quantum mechanical treatment of the photon's initial state interactions with a semi-classical coupled channel simulation of the (pre)hadronic final-state interactions (FSI). This allows us to study the hadron attenuation observed at HERMES and to get information on the space-time picture of hadron formation separately for π±, π0, K±, p and [Formula: see text].

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LOW ENERGY DOUBLE-PION PHOTOPRODUCTION IN NUCLEI

International Journal of Modern Physics A ◽

10.1142/s0217751x05021828 ◽

2005 ◽

Vol 20 (02n03) ◽

pp. 578-580 ◽

Cited By ~ 2

Author(s):

L. ALVAREZ-RUSO ◽

P. MÜHLICH ◽

O. BUSS ◽

U. MOSEL

Keyword(s):

Transport Model ◽

Invariant Mass Spectrum ◽

Pion Photoproduction ◽

Low Energy ◽

Medium Effects ◽

Final State ◽

Target Mass ◽

Double Pion ◽

Final State Interactions ◽

Coupled Channel

We have investigated π0π0 and π±π0 photoproduction off complex nuclei. Simulations have been performed by means of a semi-classical BUU transport model including a full coupled-channel treatment of the final state interactions. We show that the target mass dependence of the π0π0 invariant mass spectrum as measured by the TAPS collaboration can be explained without introducing medium effects beyond absorption and quasi-elastic scattering of the final state particles. On the other hand, we find considerable discrepancies with the data in the π±π0 channel, which are not understood.

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