scholarly journals Coulomb Final State Interaction in Heavy Ion Collisions for Lévy Sources

Universe ◽  
2019 ◽  
Vol 5 (6) ◽  
pp. 133 ◽  
Author(s):  
Máté Csanád ◽  
Sándor Lökös ◽  
Márton Nagy
Keyword(s):  
Coulomb Interaction ◽  
Heavy Ion Collisions ◽  
Particle Production ◽  
Final State Interaction ◽  
Heavy Ion ◽  
High Energy ◽  
State Interaction ◽  
Final State ◽  
Ion Collisions ◽  
Final State Interactions

Investigation of momentum space correlations of particles produced in high energy reactions requires taking final state interactions into account, a crucial point of any such analysis. Coulomb interaction between charged particles is the most important such effect. In small systems like those created in e + e - - or p + p collisions, the so-called Gamow factor (valid for a point-like particle source) gives an acceptable description of the Coulomb interaction. However, in larger systems such as central or mid-central heavy ion collisions, more involved approaches are needed. In this paper we investigate the Coulomb final state interaction for Lévy-type source functions that were recently shown to be of much interest for a refined description of the space-time picture of particle production in heavy-ion collisions.

Very-high-energy light charged-particle production near 0° in heavy-ion collisions, 9≤E/A≤40 MeV

1990 ◽  
Vol 42 (4) ◽  
pp. 1519-1529 ◽  
Author(s):  
S. Shaheen ◽  
F. D. Becchetti ◽  
D. A. Roberts ◽  
J. W. Jänecke ◽  
R. L. Stern ◽  
...  
Keyword(s):  
Charged Particle ◽  
Heavy Ion Collisions ◽  
Particle Production ◽  
Heavy Ion ◽  
High Energy ◽  
Light Charged Particle ◽  
Ion Collisions ◽  
Charged Particle Production ◽  
Very High Energy ◽  
Very High

scholarly journals Measurements of jets in heavy ion collisions

2018 ◽  
Vol 172 ◽  
pp. 05010 ◽  
Author(s):  
Christine Nattrass
Keyword(s):  
Energy Loss ◽  
Heavy Ion Collisions ◽  
Particle Production ◽  
Hadron Collider ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
High Energy ◽  
Jet Quenching ◽  
Relativistic Heavy Ion Collider ◽  
Ion Collisions

The Quark Gluon Plasma (QGP) is created in high energy heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC). This medium is transparent to electromagnetic probes but nearly opaque to colored probes. Hard partons produced early in the collision fragment and hadronize into a collimated spray of particles called a jet. The partons lose energy as they traverse the medium, a process called jet quenching. Most of the lost energy is still correlated with the parent parton, contributing to particle production at larger angles and lower momenta relative to the parent parton than in proton-proton collisions. This partonic energy loss can be measured through several observables, each of which give different insights into the degree and mechanism of energy loss. The measurements to date are summarized and the path forward is discussed.

scholarly journals Can Baryon Stopping Be Understood within a Hadronic Transport Approach

Proceedings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 2
Author(s):  
Justin Mohs ◽  
Sangwook Ryu ◽  
Hannah Elfner
Keyword(s):  
Heavy Ion Collisions ◽  
Particle Production ◽  
String Model ◽  
Heavy Ion ◽  
High Energy ◽  
Theoretical Understanding ◽  
Double Peak Structure ◽  
Ion Collisions ◽  
Transport Approach ◽  
Rapidity Spectrum

The changing shape of the rapidity spectrum of net protons over the SPS energy range is still lacking theoretical understanding. In this work, a model for string excitation and string fragmentation is implemented for the description of high energy collisions within a hadronic transport approach. The free parameters of the string model are tuned to reproduce the experimentally measured particle production in proton-proton collisions. With the fixed parameters we advance to calculations for heavy ion collisions, where the shape of the proton rapidity spectrum changes from a single peak to a double peak structure with increasing beam energy in the experiment. We present calculations of proton rapidity spectra at different SPS energies in heavy ion collisions. Qualitatively, a good agreement with the experimental findings is obtained. In a future work, the formation process of string fragments will be studied in detail aiming to quantitatively reproduce the measurement.

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