Direct photon production in high-energy heavy-ion collisions

1999 ◽  
Vol 654 (1) ◽  
pp. 631c-634c
Author(s):  
V. Manko ◽  
M.M. Aggarwal ◽  
A. Agnihotri ◽  
Z. Ahammed ◽  
A.L.S. Angelis ◽  
...  
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Energy ◽  
Photon Production ◽  
Direct Photon ◽  
Ion Collisions ◽  
Direct Photon Production

scholarly journals MEASURING BREMSSTRAHLUNG PHOTONS IN $\sqrt{S} = 200\ {\rm GeV}$p-p COLLISIONS

2007 ◽  
Vol 16 (07n08) ◽  
pp. 2182-2186
Author(s):  
◽  
ALI HANKS
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Photon Production ◽  
Direct Photon ◽  
Final State ◽  
Ion Collisions ◽  
Bremsstrahlung Photons ◽  
Direct Photon Production

Direct photon production is an important observable in heavy ion collisions, as photons are penetrating and therefore largely insensitive to final state effects. Measurements of the fragmentation component of direct photon yields in p + p and Au + Au collisions will provide important tests of pQCD predictions and of predictions for modifications of this component in heavy ion collisions. By selecting photons associated with jets on the same side using hadron-photon correlations, fragmentation photons can be measured directly.

scholarly journals Direct Photon Production in High-Energy Heavy Ion Collisions within the Integrated Hydrokinetic Model

J ◽  
2022 ◽  
Vol 5 (1) ◽  
pp. 1-14
Author(s):  
Yuri Sinyukov ◽  
Volodymyr Shapoval
Keyword(s):  
Heavy Ion Collisions ◽  
Hadron Collider ◽  
Photon Emission ◽  
Heavy Ion ◽  
High Energy ◽  
Direct Photon ◽  
Relativistic Heavy Ion Collider ◽  
Ion Collisions ◽  
Direct Photon Production ◽  
Transverse Momentum Spectra

The results on description of direct photon yields, transverse momentum spectra, and flow harmonics, measured in ultrarelativistic heavy-ion collisions at the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC) for different collision centrality classes, analyzed within the Integrated Hydrokinetic Model (iHKM) are reviewed. The iHKM simulation results, corresponding to the two opposite approaches to the matter evolution treatment at the final stage of the system’s expansion within the model, namely, the chemically equilibrated and the chemically frozen evolution, are compared. The so-called “direct photon puzzle” is addressed, and its possible solution, suggesting the account for additional photon emission at confinement, is considered.

Direct-photon production in heavy-ion collisions

1993 ◽  
Vol 47 (5) ◽  
pp. 1906-1918 ◽  
Author(s):  
A. Petridis ◽  
K. E. Lassila ◽  
J. P. Vary
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Photon Production ◽  
Direct Photon ◽  
Ion Collisions ◽  
Direct Photon Production
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