scholarly journals Rapidity and transverse-momentum dependence of the inclusive J/ψ nuclear modification factor in p-Pb collisions at s N N $$ \sqrt{s_{N\ N}} $$ = 5.02 TeV

2015 ◽  
Vol 2015 (6) ◽  
Author(s):  
J. Adam ◽  
◽  
D. Adamová ◽  
M. M. Aggarwal ◽  
G. Aglieri Rinella ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Momentum Dependence ◽  
Transverse Momentum Dependence ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Modification Factor

scholarly journals Centrality and transverse momentum dependence of J/ψ production in Pb-Pb collisions at √SNN = 5.02 TeV at mid-rapidity with ALICE

2018 ◽  
Vol 171 ◽  
pp. 18018 ◽  
Author(s):  
Dennis Weiser
Keyword(s):  
Transverse Momentum ◽  
Decay Channel ◽  
Momentum Dependence ◽  
Transverse Momentum Dependence ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Acceptance Range ◽  
Modification Factor

We present new results for the nuclear modification factor RAA of J/ψ mesons as a function of centrality and transverse momentum at mid-rapidity. The measurement is carried out with the ALICE central barrel detectors in the acceptance range |y| < 0.9 and pT > 0 in the dielectron decay channel.

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.

scholarly journals DOES THE CRONIN PEAK DISAPPEAR AT LHC ENERGIES?

2007 ◽  
Vol 16 (07n08) ◽  
pp. 1923-1929 ◽  
Author(s):  
GERGELY GÁBOR BARNAFÖLDI ◽  
PÉTER LÉVAI ◽  
GEORGE FAI ◽  
GÁBOR PAPP ◽  
BRIAN A. COLE
Keyword(s):  
Transverse Momentum ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Modification Factor ◽  
Nuclear Modification Factors

In this work we compare the nuclear modification factors in proton (deuteron) — nucleus collisions at CERN SPS, FNAL and RHIC energies in a wide pT range. In these experiments the nuclear modification factor has shown an enhancement at pT ≈ 4 GeV /c. The height of this “Cronin peak” depends on the c.m. energy of the collision, as it is subject to stronger shadowing at higher energies. One of the aims of this contribution is to analyze the shadowing phenomenon at lower (2 GeV / c ≲ pT ≲ 4 GeV / c ) and intermediate (4 GeV / c ≲ pT ≲ 8 GeV / c ) transverse momentum. Different shadowing parametrizations are considered and the obtained Cronin peaks are investigated at RHIC and LHC energies.

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.

IDENTIFIED PARTICLE NUCLEAR MODIFICATION FACTORS AT RAPIDITY 0–3.8 IN AU+AU COLLISIONS AT $\sqrt{^SNN} = 200\ {\rm GEV}$

2007 ◽  
Vol 16 (07n08) ◽  
pp. 1943-1949
Author(s):  
◽  
CATALIN RISTEA
Keyword(s):  
Transverse Momentum ◽  
Minimum Bias ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Charged Hadrons ◽  
Momentum Spectra ◽  
Modification Factor ◽  
Transverse Momentum Spectra ◽  
Nuclear Modification Factors

We present the transverse momentum spectra for charged hadrons as well as for identified particles produced in Au + Au and p + p collisions at [Formula: see text] for different event centralities (minimum bias spectra for p + p) in narrow rapidity ranges (±0.1), for midrapidity and high rapidities (up to 3.8). Nuclear modification factor RAA for identified baryons and mesons, as well as for inclusive charged hadrons, at rapidities from 0 to 3.8 will be shown and discussed.

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