Thermal photons from gluon fusion with magnetic fields

被引：11

作者：

Ayala, Alejandro ^{[1
,2
,3
]}

David Castano-Yepes, Jorge ^{[1
]}

Dominguez, C. A. ^{[2
,3
]}

Hernandez, L. A. ^{[2
,3
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Apartado Postal 70-543, Mexico City 04510, DF, Mexico

[2] Univ Cape Town, Ctr Theoret & Math Phys, ZA-7700 Rondebosch, South Africa

[3] Univ Cape Town, Dept Phys, ZA-7700 Rondebosch, South Africa

来源：

XLVI INTERNATIONAL SYMPOSIUM ON MULTIPARTICLE DYNAMICS (ISMD 2016) | 2017年 / 141卷

基金：

新加坡国家研究基金会;

关键词：

COLLISIONS; PERSPECTIVE; PLASMA; EVENT;

D O I：

10.1051/epjconf/201714102007

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We compute the production of thermal photons in relativistic heavy-ion collisions by gluon fusion in the presence of an intense magnetic field, and during the early stages of the reaction. This photon yield is an excess over calculations that do not consider magnetic field effects. We add this excess to recent hydrodynamic calculations that are close to describing the experimental transverse momentum distribution in RHIC and LHC. We then show that with reasonable values for the temperature, magnetic field strength, and strong coupling constant, our results provide a very good description of such excess. These results support the idea that the origin of at least some of the photon excess observed in heavy-ion experiments may arise from magnetic field induced processes.

引用

页数：6

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