Direct photons in hydrodynamic modeling of relativistic nuclear collisions

被引：6
作者：
Monnai, Akihiko [1 ,2 ]
机构：
[1] Osaka Inst Technol, Dept Gen Educ, Asahi Ku, Osaka 5358585, Japan
[2] Japan Womens Univ, Dept Math & Phys Sci, Bunkyo Ku, Tokyo 1128681, Japan
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2022年 / 37卷 / 11-12期
关键词：
Quantum chromodynamics; photon; nuclear collision; QUARK-GLUON PLASMA; HEAVY-ION COLLISIONS; PLUS AU COLLISIONS; EQUATION-OF-STATE; PB-PB COLLISIONS; THERMAL PHOTONS; ELLIPTIC FLOW; ELECTROMAGNETIC PROBES; CENTRALITY DEPENDENCE; EMISSION;
D O I：
10.1142/S0217751X2230006X
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We review direct photons in the phenomenology of nuclear collisions at relativistic energies. Direct photons carry information about the space-time evolution of nuclear collisions because the QCD medium is transparent against colorless particles. After a status summary of theoretical and experimental studies, transverse momentum spectra and azimuthal momentum anisotropies of direct photons are studied in the context of the hydrodynamic modeling of relativistic nuclear collisions with emphasis on pre-equilibrium photons. It is implied that pre-equilibrium photons can be as important as thermal and prompt photons for comprehensive understanding of direct photon production.
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页数：26
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