AI 中文总结
该研究计算任意强度磁场诱导的胶子聚变与分裂产生的光子产额及椭圆流，平衡前胶子分布采用两种模型，结果与PHENIX实验数据吻合，为解决光子难题提供了进展。
AI 中文摘要
我们计算半中心相对论重离子碰撞平衡前阶段中，由磁场存在诱导的胶子聚变与分裂过程产生的光子产额及椭圆流系数，计算针对任意场强值开展。平衡前的胶子分布采用受glasma启发的玻色-爱因斯坦占据因子建模，同时采用各向异性分布以描述沿束轴的快速初始膨胀。在两种情形下，我们的计算结果与PHENIX的实验数据均吻合极好，最值得注意的是，椭圆流系数的形状与强度均被很好地描述，这为解决悬而未决的光子难题迈出了一步。
英文摘要
We compute the yield and elliptic flow coefficient for photons produced during the pre-equilibrium stage of semi-central relativistic heavy-ion collisions from the gluon fusion and splitting processes induced by the presence of a magnetic field. The calculation is performed for arbitrary values of the field strength. The pre-equilibrium gluon distribution is modeled with a glasma-inspired Bose-Einstein occupation factor, as well as with an anisotropic distribution that accounts for the rapid initial expansion along the beam axis. In both cases, we find a very good agreement between the calculation and the experimental data from PHENIX. Most notably, the shape and strength of the elliptic flow coefficient are described quite well, representing a step towards solving the outstanding photon puzzle.
Comments17 pages, 10 figures
