Nuclear modification of the transverse momentum distributions in high energy pA and AA collisions

2014 ◽  
Vol 924 ◽  
pp. 47-64 ◽  
Author(s):  
D.E. Kharzeev ◽  
E.M. Levin ◽  
K. Tuchin
Keyword(s):  
Transverse Momentum ◽  
High Energy ◽  
Nuclear Modification ◽  
Momentum Distributions ◽  
Aa Collisions

Transverse momentum and nuclear modification factor distributions of charged particles in p + Pb and p+p collisions at s NN = 5.02 TeV

2019 ◽  
Vol 34 (16) ◽  
pp. 1950120 ◽  
Author(s):  
Q. Ali ◽  
Y. Ali ◽  
M. Haseeb ◽  
M. Ajaz
Keyword(s):  
Experimental Data ◽  
Transverse Momentum ◽  
Charged Particles ◽  
Momentum Range ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Model Distribution ◽  
Momentum Distributions ◽  
Modification Factor ◽  
Good Agreement

Transverse momentum distributions and nuclear modification factor of integrated charged particles yield produced in p[Formula: see text]+[Formula: see text]Pb collisions at [Formula: see text] = 5.02 TeV are investigated in mid-rapidity regions of [Formula: see text] at one event multiplicity class 0–5% in the transverse momentum range of [Formula: see text]20 GeV/c. Simulations with EPOS-1.99, EPOS-LHC and QGSJETII-04 are compared with the ALICE data. All three models are in good agreement with each other up to [Formula: see text]3 GeV/c for transverse momentum distributions but after that QGSJETII-04 overpredicts the experimental data. EPOS-LHC seems to describe the experimental data quite well as compared to the other two models. The ratios of the kaons to pions and protons to pions are also presented where again EPOS-LHC provides good agreement with the ALICE data. In case of the nuclear modification factor, for (anti) pions and (anti) kaons, the model distribution is around 1, whereas it is greater than 1 in case of (anti) protons which shows Cronin enhancement.

Transverse-Momentum Distributions in High-Energy Collisions

1973 ◽  
Vol 7 (1) ◽  
pp. 133-139
Author(s):  
L. M. Saunders ◽  
Davison E. Soper
Keyword(s):  
Transverse Momentum ◽  
High Energy ◽  
Momentum Distributions ◽  
High Energy Collisions

scholarly journals Freeze-Out Parameters in Heavy-Ion Collisions at AGS, SPS, RHIC, and LHC Energies

2015 ◽  
Vol 2015 ◽  
pp. 1-20 ◽  
Author(s):  
Sandeep Chatterjee ◽  
Sabita Das ◽  
Lokesh Kumar ◽  
D. Mishra ◽  
Bedangadas Mohanty ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Energy ◽  
Particle Multiplicity ◽  
Charged Particle Multiplicity ◽  
Ion Collisions ◽  
Momentum Distributions ◽  
Chemical Freeze ◽  
Freeze Out

We review the chemical and kinetic freeze-out conditions in high energy heavy-ion collisions for AGS, SPS, RHIC, and LHC energies. Chemical freeze-out parameters are obtained using produced particle yields in central collisions while the corresponding kinetic freeze-out parameters are obtained using transverse momentum distributions of produced particles. For chemical freeze-out, different freeze-out scenarios are discussed such as single and double/flavor dependent freeze-out surfaces. Kinetic freeze-out parameters are obtained by doing hydrodynamic inspired blast wave fit to the transverse momentum distributions. The beam energy and centrality dependence of transverse energy per charged particle multiplicity are studied to address the constant energy per particle freeze-out criteria in heavy-ion collisions.

Transverse momentum distributions of identified particles produced in pp, p(d), and AA collisions at high energies

Pramana ◽  
2012 ◽  
Vol 79 (6) ◽  
pp. 1407-1423 ◽  
Author(s):  
YA-QIN GAO ◽  
CAI-XING TIAN ◽  
MAI-YING DUAN ◽  
BAO-CHUN LI ◽  
FU-HU LIU
Keyword(s):  
Transverse Momentum ◽  
High Energies ◽  
Momentum Distributions ◽  
Aa Collisions

scholarly journals Transverse Momentum Distributions of Final-State Particles Produced in Soft Excitation Process in High Energy Collisions

2013 ◽  
Vol 2013 ◽  
pp. 1-15 ◽  
Author(s):  
Fu-Hu Liu ◽  
Ya-Hui Chen ◽  
Hua-Rong Wei ◽  
Bao-Chun Li
Keyword(s):  
Transverse Momentum ◽  
Quantum Effect ◽  
Hadron Collider ◽  
Heavy Ion ◽  
High Energy ◽  
Ideal Gas ◽  
Relativistic Heavy Ion Collider ◽  
Final State ◽  
Momentum Distributions ◽  
High Energy Collisions

Transverse momentum distributions of final-state particles produced in soft process in proton-proton (pp) and nucleus-nucleus (AA) collisions at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC) energies are studied by using a multisource thermal model. Each source in the model is treated as a relativistic and quantum ideal gas. Because the quantum effect can be neglected in investigation on the transverse momentum distribution in high energy collisions, we consider only the relativistic effect. The concerned distribution is finally described by the Boltzmann or two-component Boltzmann distribution. Our modeling results are in agreement with available experimental data.

Transverse momentum distribution of primary charged particles in p–Pb interactions at forward pseudorapidity at LHC energies

2017 ◽  
Vol 26 (04) ◽  
pp. 1750021 ◽  
Author(s):  
Y. Ali ◽  
N. Ullah Jan ◽  
U. Tabassam ◽  
M. Suleymanov ◽  
A. S. Bhatti
Keyword(s):  
Transverse Momentum ◽  
Incident Energy ◽  
Charged Particles ◽  
Simulated Data ◽  
Event Generator ◽  
High Transverse Momentum ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Momentum Distributions ◽  
Modification Factor

Transverse momentum distributions of primary charged particles have been studied using simulated data from the HIJING 1.0 event generator in the minimum bias p–Pb collisions at [Formula: see text] = 0.9, 1.8, 2.76 and 5.02[Formula: see text], in the two forward pseudorapidity ([Formula: see text]) regions: [Formula: see text] and [Formula: see text] and in the transverse momentum range of [Formula: see text]. The simulated data in the pseudorapidity region of [Formula: see text] at 5.02[Formula: see text] depicts some differences in the region of [Formula: see text] [Formula: see text] 2[Formula: see text] when compared with CMS data. Model shows systematically higher values than the experimental measurements pointing out absorption effect for the experimental data. It is also observed that with increasing rapidity interval from [Formula: see text] to [Formula: see text] observed differences for the behavior of the transverse momentum distributions are shifted to high transverse momentum region. The nuclear modification factor as a function of transverse momentum is constructed using the HIJING 1.0 code. With incident energy, the values of nuclear modification factor increase, for 0.9 and 1.8 [Formula: see text], the distributions seem to increase, but for 2.76 and 5.02 [Formula: see text], the distributions look flat. Numerically, the value of nuclear modification factor increases with the increase in the number of jets. This result shows that for the considered more forward pseudorapidiry area, the influence of the incident energy dominates and this is the reason that main results in the areas are connected with the leading particles.

Production of negatively charged particles in nucleus–nucleus collisions at 200A GeV

2002 ◽  
Vol 80 (5) ◽  
pp. 525-532
Author(s):  
F -H Liu
Keyword(s):  
Experimental Data ◽  
Transverse Momentum ◽  
Charged Particles ◽  
High Energy ◽  
Momentum Distributions

Three isotropic emission fireballs are used to describe the rapidity (or pseudorapidity) and transverse momentum distributions of negatively charged particles produced in nucleus–nucleus collisions at high energy. The calculated results are compared and shown to be in agreement with the experimental data of 16O–Au, 32S–S, and 32S–Ag collisions at 200A GeV. PACS Nos.: 25.75-q, 24.10Pa

scholarly journals Excitation Functions of Tsallis-Like Parameters in High-Energy Nucleus–Nucleus Collisions

Entropy ◽  
2021 ◽  
Vol 23 (4) ◽  
pp. 478
Author(s):  
Li-Li Li ◽  
Fu-Hu Liu ◽  
Khusniddin K. Olimov
Keyword(s):  
Transverse Momentum ◽  
High Energy ◽  
Central Nucleus ◽  
Excitation Functions ◽  
Momentum Spectra ◽  
Charged Pions ◽  
Transverse Momentum Spectra ◽  
Two Parameters ◽  
Freeze Out ◽  
Aa Collisions

The transverse momentum spectra of charged pions, kaons, and protons produced at mid-rapidity in central nucleus–nucleus (AA) collisions at high energies are analyzed by considering particles to be created from two participant partons, which are assumed to be contributors from the collision system. Each participant (contributor) parton is assumed to contribute to the transverse momentum by a Tsallis-like function. The contributions of the two participant partons are regarded as the two components of transverse momentum of the identified particle. The experimental data measured in high-energy AA collisions by international collaborations are studied. The excitation functions of kinetic freeze-out temperature and transverse flow velocity are extracted. The two parameters increase quickly from ≈3 to ≈10 GeV (exactly from 2.7 to 7.7 GeV) and then slowly at above 10 GeV with the increase of collision energy. In particular, there is a plateau from near 10 GeV to 200 GeV in the excitation function of kinetic freeze-out temperature.

A hydrodynamic model including phase transition and the thermal motion-induced transverse momentum distributions in high energy heavy ion collisions

2017 ◽  
Vol 26 (07) ◽  
pp. 1750045
Author(s):  
Z. J. Jiang ◽  
J. Q. Hui ◽  
Y. Zhang
Keyword(s):  
Phase Transition ◽  
Transverse Momentum ◽  
Hydrodynamic Model ◽  
Good Description ◽  
Heavy Ion ◽  
High Energy ◽  
Thermal Motion ◽  
Ion Collisions ◽  
Momentum Distributions ◽  
Theoretical Predictions

By taking into account the effects of thermal motion, the transverse momentum distributions of identified charged particles produced in nucleus collisions are discussed in the context of a hydrodynamic model including phase transition. A comparison is made between the theoretical predictions and experimental measurements. The theoretical model gives a good description to the data collected in Au–Au collisions at RHIC energy of [Formula: see text][Formula: see text]GeV. For Pb–Pb collisions at LHC energy of [Formula: see text][Formula: see text]TeV, the model works well up to the transverse momentum of about [Formula: see text][Formula: see text]GeV/c.

Sign in / Sign up

Export Citation Format

Share Document