scholarly journals Spin Quantization in Heavy Ion Collision

Symmetry ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1777
Author(s):  
Hua Zheng ◽  
Aldo Bonasera
Keyword(s):  
Experimental Data ◽  
Cluster Model ◽  
Classical Mechanics ◽  
Theoretical Models ◽  
Heavy Ion ◽  
Recent Experimental Data ◽  
Heavy Ion Collision ◽  
L Value ◽  
Spin Quantization ◽  
Ion Collision

We analyzed recent experimental data on the disassembly of 28Si into 7α in terms of a hybrid α-cluster model. We calculated the probability of breaking into several α-like fragments for high l-spin values for identical and non-identical spin zero nuclei. Resonant energies were found for each l-value and compared to the data and other theoretical models. Toroidal-like structures were revealed in coordinate and momentum space when averaging over many events at high l. The transition from quantum to classical mechanics is highlighted.

scholarly journals Study of Angular Distribution and KNO Scaling in the Collisions of 28Si with Emulsion Nuclei at 14.6A GeV

2021 ◽  
Vol 57 (12) ◽  
pp. 1205
Author(s):  
M. Ayaz Ahmad ◽  
Shafiq Ahmad
Keyword(s):  
Experimental Data ◽  
Angular Distribution ◽  
Nuclear Emulsion ◽  
Multiplicity Distribution ◽  
Heavy Ion ◽  
High Energy ◽  
Universal Function ◽  
Heavy Ion Collision ◽  
Present Experimental Data ◽  
Ion Collision

An attempt has been made to study the angular characteristics of heavy ion collision at high energy in the interactions of 28Si nuclei using with nuclear emulsion. The KNO scaling behavior in terms of the multiplicity distribution has been studied. A simplest universal function has been used to represent the present experimental data.

scholarly journals Fluctuations of conserved charges from imaginary chemical potential

2018 ◽  
Vol 175 ◽  
pp. 07036
Author(s):  
Jana N. Guenther ◽  
Szabolcs Borsányi ◽  
Zoltan Fodor ◽  
Sandor D. Katz ◽  
Attila Pásztor ◽  
...  
Keyword(s):  
Experimental Data ◽  
Chemical Potential ◽  
Heavy Ion ◽  
Higher Order ◽  
Order Derivative ◽  
Heavy Ion Collision ◽  
Lattice Calculation ◽  
Eighth Order ◽  
Conserved Charges ◽  
Ion Collision

When comparing lattice calculation to experimental data from heavy ion collision experiments, the higher order fluctuations of conserved charges are important observables. An efficient way to study these fluctuations is to determine them from simulations at imaginary chemical potential. In this talk we present results up to the six order derivative in μB (with up to eighth order included in the fit), calculated on a 483 × 12 lattice with staggered fermions using different values of μB while μS = μQ = 0.

scholarly journals Anisotropic Hydrodynamics for Au-Au Collisions at 200 GeV

Proceedings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 38
Author(s):  
Mubarak Alqahtani ◽  
◽  
Keyword(s):  
Experimental Data ◽  
Initial Conditions ◽  
Heavy Ion ◽  
Experimental Results ◽  
Heavy Ion Collision ◽  
200 Gev ◽  
Ion Collision

In this proceedings, we review the basics of quasiparticle anisotropic hydrodynamics (aHydroQP). Then we present phenomenological comparisons between 3+1d quasiparticle anisotropic hydrodynamics and experimental data from RHIC experiments at 200 GeV Au-Au collisions. We show that 3+1d aHydroQP model is able to describe the experimental results quite well using smooth Glauber initial conditions for many heavy-ion collision observables.

EVIDENCE AGAINST A HYPOTHETICAL LIGHT SCALAR PARTICLE PRODUCED IN HEAVY ION COLLISION SYSTEMS

1986 ◽  
Vol 01 (03) ◽  
pp. 157-160 ◽  
Author(s):  
U.E. SCHRÖDER
Keyword(s):  
Experimental Data ◽  
Scalar Particle ◽  
Heavy Ion ◽  
Low Energy ◽  
Heavy Ion Collision ◽  
Energy Neutron ◽  
Light Scalar ◽  
Nucleus Scattering ◽  
Ion Collision

The existence of a hypothetical light scalar particle with conventional coupling to hadrons that has been suggested in order to explain the positron lines observed in super-heavy collision systems is shown to be in violent contradiction with experimental data obtained in low energy neutron-nucleus scattering.

Collision geometry and particle production in high energy heavy ion collision experiments

2008 ◽  
Vol 32 (4) ◽  
pp. 308-328
Author(s):  
Wang Ya-Ping ◽  
Zhou Dai-Mei ◽  
Huang Rui-Dian ◽  
Cai Xu
Keyword(s):  
Particle Production ◽  
Heavy Ion ◽  
High Energy ◽  
Heavy Ion Collision ◽  
Ion Collision

Dynamical model for neck formation in the entrance channel of a heavy ion collision

1982 ◽  
Vol 306 (4) ◽  
pp. 307-313 ◽  
Author(s):  
S. K. Samaddar ◽  
B. C. Samanta ◽  
D. Sperber ◽  
M. Zielińska-Pfabé
Keyword(s):  
Heavy Ion ◽  
Entrance Channel ◽  
Dynamical Model ◽  
Heavy Ion Collision ◽  
Neck Formation ◽  
Ion Collision

Study and Investigation of Hard Photons Emission in Heavy Ion Collisions

2021 ◽  
Vol 19 (2) ◽  
pp. 61-65
Author(s):  
Taghreed A. Younis ◽  
Hadi J.M. Al-Agealy
Keyword(s):  
Critical Temperature ◽  
Quark Gluon Plasma ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Heavy Ion Collision ◽  
Hard Photon ◽  
Ion Collisions ◽  
Strength Models ◽  
Ion Collision

This work involves hard photon rate production from quark -gluon plasma QGP interaction in heavy ion collision. Using a quantum chromodynamic model to investigate and calculation of photons rate in 𝑐𝑔 → 𝑠𝑔𝛾 system due to strength coupling, photons rate, temperature of system, flavor number and critical. The photons rate production computed using the perturbative strength models for QGP interactions. The strength coupling was function of temperature of system, flavor number and critical temperature. Its influenced by force with temperature of system, its increased with decreased the temperature and vice versa. The strength coupling has used to examine the confinement and deconfinement of quarks in QGP properties and influence on the photon rate production. In our approach, we calculate the photons rate depending on the strength coupling, photons rate and temperature of system with other factors. The results plotted as a function of the photons energy. The photons rate was decreased with increased temperature and increased with decreased with strength coupling.

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