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

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.

Particle production in central Pb–Pb collisions at high energy

2002 ◽  
Vol 80 (8) ◽  
pp. 883-891
Author(s):  
F -H Liu
Keyword(s):  
Experimental Data ◽  
Transverse Momentum ◽  
Particle Production ◽  
High Energy ◽  
Recent Experimental Data ◽  
Na49 Collaboration ◽  
Momentum Distributions ◽  
Cylinder Model

The rapidity and transverse-momentum distributions of particles produced in central Pb–Pb collisions at high energy are analyzed by the thermalized cylinder model. The calculated results are compared and found to be in agreement with the recent experimental data of the NA49 Collaboration. PACS Nos.: 25.75-q, 24.10Pa

Study of transverse momentum distributions in p−Pb interactions at 0.9 TeV and 5.02 TeV

2018 ◽  
Vol 33 (31) ◽  
pp. 1850179 ◽  
Author(s):  
Q. Ali ◽  
Y. Ali ◽  
M. Haseeb ◽  
U. Tabassam ◽  
M. Ajaz ◽  
...  
Keyword(s):  
Experimental Data ◽  
Transverse Momentum ◽  
Charged Particles ◽  
Alice Experiment ◽  
Momentum Range ◽  
Cms Experiment ◽  
Momentum Distributions

This work is aimed to investigate the transverse momentum ([Formula: see text]) distributions of primary charged particles produced in p[Formula: see text][Formula: see text]Pb collisions at [Formula: see text][Formula: see text]0.9 TeV and 5.02 TeV. In this perspective, we have considered the pseudorapidity [Formula: see text] regions of [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] and the transverse momentum range of [Formula: see text]. In order to check the validity of simulation, we have compared the prediction of EPOS-1.99, EPOS-LHC and QGSJETII-04 models with the measurement of the [Formula: see text] distribution of ALICE experiment at [Formula: see text][Formula: see text]5.02 TeV for [Formula: see text], [Formula: see text], [Formula: see text], and with the CMS experiment for [Formula: see text]. We discovered that all the models overpredict the distribution of the experimental data for [Formula: see text][Formula: see text]5 GeV/c while presenting consistent result with each other at 0.9 TeV as well as 5.02 TeV. For [Formula: see text][Formula: see text]5 GeV/c, the models seem to be consistent with the experimental data where the EPOS-LHC describes both the ALICE and CMS data very well.

Pseudorapidity distribution of relativistic singly charged particles in heavy-ion collisions at high energy

1999 ◽  
Vol 77 (4) ◽  
pp. 313-318 ◽  
Author(s):  
F -H Liu ◽  
Y A Panebratsev
Keyword(s):  
Experimental Data ◽  
Heavy Ion Collisions ◽  
Charged Particles ◽  
Heavy Ion ◽  
High Energy ◽  
Pseudorapidity Distribution ◽  
Ion Collisions ◽  
Singly Charged

The pseudorapidity distribution of relativistic singly charged particles produced in high-energy heavy-ion collisions is described by the thermalized cylinder picture. The calculated results are in agreement with the experimental data of lead-induced interactions at 158A GeV/c. PACS Nos.:25.75.-q and 25.75.Dw

Analysis of transverse momentum distributions of charged particles produced in CC interactions at 4.2 A GeV/c

2019 ◽  
Vol 34 (23) ◽  
pp. 1950187
Author(s):  
A. R. Gilani ◽  
Z. Wazir ◽  
M. K. Suleymanov ◽  
S. Kanwal ◽  
S. M. Aslam ◽  
...  
Keyword(s):  
Experimental Data ◽  
Transverse Momentum ◽  
Bubble Chamber ◽  
Nuclear Research ◽  
Cascade Model ◽  
Model Data ◽  
Simulation Data ◽  
The Third ◽  
Momentum Distributions ◽  
Number Of Particles

In this paper, the transverse momentum and maximum transverse momentum distributions of protons and pions produced in an event for CC collisions at 4.2 A GeV/c have been analyzed. This analysis is based on experimental data obtained from 2 m propane bubble chamber at Joint Institute for Nuclear Research, Dubna, Russia and simulation data obtained from Dubna cascade code. We observed three disparate zones for the transverse momentum distribution of the produced particles. The third zone where transverse momentum is greater than 0.375 GeV/c is restricted only for pions with transverse momentum approximately equal to 1 GeV/c, and for protons the restricted value of [Formula: see text] is [Formula: see text][Formula: see text]1.5 GeV/c. So contribution of pions to this region is less and decreases sharply than the contribution of protons. The results of cascade model are not fully compatible with the experimental results in the third [Formula: see text] region, as this region contains less number of particles for model data as compared with experimental data but is compatible in the case of [Formula: see text].

Models prediction of hadrons production ratios in pp collisions at s = 7 TeV

2019 ◽  
Vol 34 (13) ◽  
pp. 1950090 ◽  
Author(s):  
M. Ajaz ◽  
M. Bilal ◽  
Y. Ali ◽  
M. K. Suleymanov ◽  
K. H. Khan
Keyword(s):  
Experimental Data ◽  
Transverse Momentum ◽  
Charged Particles ◽  
Hadron Production ◽  
Proton Proton ◽  
Proton Collisions ◽  
Particle Ratios ◽  
Production Models ◽  
Lhcb Detector ◽  
Proton Proton Collisions

The pseudorapidity [Formula: see text] dependence of charged-particles ratios in three transverse momentum [Formula: see text] regions, obtained by hadron production models, in proton–proton collisions at 7 TeV are compared with the measurements of LHCb detector. Compared to the experimental data, the [Formula: see text] ratios are independent of [Formula: see text] and [Formula: see text] and are very well predicted by all models (DPMJETIII, EPOS1.99, EPOS-LHC, HIJING1.383, QGSJETII-04 and Sibyll2.3c). All models predict the [Formula: see text] ratio at low [Formula: see text] for [Formula: see text], but underestimate afterward while reproducing the experimental data at medium and high [Formula: see text] very well. The [Formula: see text] ratio is described by the models very well at high [Formula: see text] in the low and medium [Formula: see text] region. At high [Formula: see text], models predict the experimental data well, except Sibyll2.3c that slightly overestimates. The [Formula: see text] ratio is predicted by EPOS1.99, HIJING and Sibyll at low [Formula: see text] and EPOS-LHC, EPOS1.99 and Sibyll predicted at high [Formula: see text] for low [Formula: see text]. For medium [Formula: see text], EPOS1.99 and Sibyll predict very well for [Formula: see text] while EPOS-LHC and HIJING models reproduce the data for [Formula: see text]. All models underpredict the [Formula: see text] ratio for [Formula: see text]. For the [Formula: see text] and [Formula: see text] ratios, only Sibyll and EPOS1.99 models could reproduce some regions of [Formula: see text] and [Formula: see text]. None of the models satisfactorily predict all the ratios. the same particle ratios are well described by most of the models while the discrepancies occur mostly in predicting the different particles ratios.

Transverse-momentum distributions of charged particles produced inp¯pinteractions at √s¯=630 and 1800 GeV

1988 ◽  
Vol 61 (16) ◽  
pp. 1819-1822 ◽  
Author(s):  
F. Abe ◽  
D. Amidei ◽  
G. Apollinari ◽  
G. Ascoli ◽  
M. Atac ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Charged Particles ◽  
Momentum Distributions
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