scholarly journals Nonperturbative-transverse-momentum effects and evolution in dihadron and direct photon-hadron angular correlations in p+p collisions at s=510  GeV

2017 ◽  
Vol 95 (7) ◽  
Author(s):  
A. Adare ◽  
C. Aidala ◽  
N. N. Ajitanand ◽  
Y. Akiba ◽  
R. Akimoto ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Direct Photon ◽  
Angular Correlations

scholarly journals Direct Photon Measurements with the ALICE Experiment at the LHC

Proceedings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Erwann Masson ◽  
on behalf of the ALICE Collaboration
Keyword(s):  
Transverse Momentum ◽  
High Energy ◽  
Direct Photon ◽  
High Transverse Momentum ◽  
Alice Experiment ◽  
Direct Photons ◽  
Proton Proton ◽  
Small Systems ◽  
Energy Hadron

In high-energy hadron collisions, direct photons can be produced in various processes andare of particular interest to study the hot QCD medium since they escape it without being affected.These proceedings present the latest ALICE experiment results concerning direct photon productionin proton-proton (pp), proton-lead (p–Pb) and lead-lead (Pb–Pb) collisions. All measurements agreewith pQCD calculations at high transverse momentum (pT) and show no direct photon excess at lowpT in small systems while a low-pT signal is found in central Pb–Pb collisions.

scholarly journals Direct photon production at low transverse momentum in proton-proton collisions at s=2.76 and 8 TeV

2019 ◽  
Vol 99 (2) ◽  
Author(s):  
S. Acharya ◽  
F. T.-. Acosta ◽  
D. Adamová ◽  
J. Adolfsson ◽  
M. M. Aggarwal ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Photon Production ◽  
Direct Photon ◽  
Proton Proton ◽  
Proton Collisions ◽  
Direct Photon Production ◽  
8 Tev ◽  
Proton Proton Collisions

scholarly journals Study of Angular Correlations in Monte Carlo Simulations in Pb-Pb Collisions

Universe ◽  
2019 ◽  
Vol 5 (5) ◽  
pp. 97
Author(s):  
Balázs Endre Szigeti ◽  
Monika Varga-Kofarago
Keyword(s):  
Monte Carlo ◽  
Transverse Momentum ◽  
Monte Carlo Simulations ◽  
Angular Correlation ◽  
Charged Hadron ◽  
Experimental Results ◽  
Transport Models ◽  
Side Peak ◽  
Angular Correlations ◽  
Hadron Pairs

In two-particle angular correlation measurements, the distribution of charged hadron pairs are evaluated as a function of pseudorapidity ( Δ η ) and azimuthal ( Δ φ ) differences. In these correlations, jets manifest themselves as a near-side peak around Δ η = 0 , Δ φ = 0 . These correlations can be used to extract transverse momentum ( p T ) and centrality dependence of the shape of the near-side peak in Pb-Pb collision. The shape of the near-side peak is quantified by the variances of the distribution. The variances are evaluated from a fit combining the peak and the background. In this contribution, identified and unidentified angular correlations are shown from Pb-Pb collisions at s N N = 2.76 TeV from Monte Carlo simulations (AMPT, PYTHIA 8.235/Angantyr). Results show that transport models in AMPT give better results than PYTHIA 8.235/Angantyr when comparing to the experimental results of the ALICE collaboration.

scholarly journals Inclusiveπ0,η, and direct photon production at high transverse momentum inp+pandd+Aucollisions atsNN=200GeV

2010 ◽  
Vol 81 (6) ◽  
Author(s):  
B. I. Abelev ◽  
M. M. Aggarwal ◽  
Z. Ahammed ◽  
A. V. Alakhverdyants ◽  
B. D. Anderson ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Photon Production ◽  
Direct Photon ◽  
High Transverse Momentum ◽  
Direct Photon Production
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