scholarly journals Light clusters in dilute heavy-baryon admixed nuclear matter

2020 ◽  
Vol 56 (10) ◽  
Author(s):  
Armen Sedrakian
Keyword(s):  
Nuclear Matter ◽  
Density Functional ◽  
Heavy Baryon ◽  
Heavy Ion ◽  
Simultaneous Treatment ◽  
Heavy Ion Physics ◽  
Binary Neutron Star ◽  
Ion Collisions ◽  
Heavy Baryons ◽  
Increasing Temperature

AbstractWe study the composition of nuclear matter at sub-saturation densities, non-zero temperatures, and isospin asymmetry, under the conditions characteristic of binary neutron star mergers, stellar collapse, and low-energy heavy-ion collisions. The composition includes light clusters with mass number $$A\le 4$$ A ≤ 4 , a heavy nucleus ($$^{56}{Fe}$$ 56 Fe ), the $$\varDelta $$ Δ -resonances, the isotriplet of pions, as well as the $$\Lambda $$ Λ hyperon. The nucleonic mean-fields are computed from a zero-range density functional, whereas the pion-nucleon interactions are treated to leading order in chiral perturbation theory. We show that with increasing temperature and/or density the composition of matter shifts from light-cluster to heavy baryon dominated one, the transition taking place nearly independent of the magnitude of the isospin. Our findings highlight the importance of simultaneous treatment of light clusters and heavy baryons in the astrophysical and heavy-ion physics contexts.

COLLECTIVE FLOW IN HEAVY-ION COLLISIONS FOR Eb=0.25-1.15GeV/NUCLEON

2009 ◽  
Vol 24 (11n13) ◽  
pp. 1063-1066
Author(s):  
PORNRAD SRISAWAD ◽  
YU-MING ZHENG ◽  
YUPENG YAN ◽  
CHINORAT KOBDAJ ◽  
YONG-ZHONG XING
Keyword(s):  
High Temperature ◽  
Nuclear Matter ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Transverse Flow ◽  
Collective Flow ◽  
Nuclear Motion ◽  
Extreme Conditions ◽  
Heavy Ion Physics ◽  
Ion Collisions

The study of the various collective flows of nuclear matter is one of the main subjects in heavy ion physics. The interest in collective nuclear motion under extreme conditions, like high density and/or high temperature originates from the equation of state (EOS) of nuclear matter. We investigate the collective transverse flow in heavy ion collisions at incident energies of 0.25 A GeV to 1.15 A GeV for Au + Au system within the quantum molecular dynamical (QMD) model. Some preliminary results are given and discussed.

scholarly journals Small System Collectivity in Relativistic Hadronic and Nuclear Collisions

2018 ◽  
Vol 68 (1) ◽  
pp. 211-235 ◽  
Author(s):  
James L. Nagle ◽  
William A. Zajc
Keyword(s):  
Large Hadron Collider ◽  
Nuclear Matter ◽  
Hadron Collider ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collider ◽  
Small System ◽  
Nuclear Collisions ◽  
Ion Collisions ◽  
Bulk Motion ◽  
Inviscid Hydrodynamics

The bulk motion of nuclear matter at the ultrahigh temperatures created in heavy ion collisions at the Relativistic Heavy Ion Collider and the Large Hadron Collider is well described in terms of nearly inviscid hydrodynamics, thereby establishing this system of quarks and gluons as the most perfect fluid in nature. A revolution in the field is under way, spearheaded by the discovery of similar collective, fluid-like phenomena in much smaller systems including p+ p, p+ A, d+Au, and3He+Au collisions. We review these exciting new observations and their profound implications for hydrodynamic descriptions of small and/or out-of-equilibrium systems.

scholarly journals Quarkonium measurements in heavy-ion collisions with the STAR experiment

2018 ◽  
Vol 171 ◽  
pp. 18015
Author(s):  
Xinjie Huang
Keyword(s):  
Transverse Momentum ◽  
Nuclear Matter ◽  
Heavy Ion Collisions ◽  
Theoretical Calculations ◽  
Heavy Ion ◽  
Matter Effects ◽  
Nuclear Modification ◽  
Ion Collisions ◽  
Star Experiment ◽  
Nuclear Modification Factors

In these proceedings, we present the latest measurements of J/ψ and ϒ by the STAR experiment. The J/ψ and ϒ production measured in p+p collisions provide new baselines for similar measurements in Au+Au collisions, while the measurements in p+Au collisions can help quantify the cold nuclear matter effects. The J/ψ υ2 is measured in both U+U and Au+Au collisions to place constraints on the amount of J/ψ arising from recombination of deconfined charm and anti-charm pairs. Furthermore, the nuclear modification factors for ground and excited ϒ states as a function of transverse momentum and centrality are presented, and compared to those measured at the LHC as well as to theoretical calculations.

scholarly journals The Nuclear Equation of State in Heavy Ion Collisions

2020 ◽  
Vol 13 ◽  
pp. 203
Author(s):  
T. Gaitanos ◽  
M. Colonna ◽  
M. Di Toro ◽  
H. H. Wolter
Keyword(s):  
Equation Of State ◽  
Nuclear Matter ◽  
Ground State ◽  
Heavy Ion Collisions ◽  
Reaction Dynamics ◽  
Heavy Ion ◽  
Intermediate Energy ◽  
Nuclear Equation Of State ◽  
Ion Collisions ◽  
Theoretical Results

We present several possibilities offered by the dynamics of intermediate energy heavy ion collisions to investigate the nuclear matter equation of state (EoS) beyond the ground state. In particular the relation between the reaction dynamics and the high density nuclear EoS is discussed by comparing theoretical results with experiments.

scholarly journals THE IMPACT OF KAON POLARIZATION IN NUCLEAR MATTER ON THE K− PRODUCTION IN HEAVY-ION COLLISIONS

1996 ◽  
Vol 05 (02) ◽  
pp. 313-328 ◽  
Author(s):  
E.E. KOLOMEITSEV ◽  
D.N. VOSKRESENSKY ◽  
B. KÄMPFER
Keyword(s):  
Nuclear Matter ◽  
Cross Sections ◽  
Heavy Ion Collisions ◽  
Particle Production ◽  
Heavy Ion ◽  
Strange Particle ◽  
Intermediate Energy ◽  
Medium Effects ◽  
Ion Collisions ◽  
The Impact

The impact of the kaon polarization in nuclear matter on the K− yield in intermediate-energy heavy-ion collisions is investigated. Our scenario of the strange particle production and dynamics is based on an expanding fireball model. This allows for a proper account of in-medium effects. A relation between observed K+ and K− yields is derived. Differential K− cross-sections are calculated and compared with available experimental data taken at various collision energies. It turns out that in-medium effects can modify the K− yields by factors 2 to 5 at beam energies between 2 and 1 AGeV.

scholarly journals Precise nuclear matter densities from heavy-ion collisions

2001 ◽  
Vol 65 (1) ◽  
Author(s):  
M. A. G. Alvarez ◽  
E. S. Rossi ◽  
C. P. Silva ◽  
L. R. Gasques ◽  
L. C. Chamon ◽  
...  
Keyword(s):  
Nuclear Matter ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Ion Collisions
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