论文标题
来自一维lévy-type源函数的Bose-Einstein相关性的库仑校正
Coulomb Corrections for Bose-Einstein Correlations from One- And Three-Dimensional Lévy-Type Source Functions
论文作者
论文摘要
在研究高能物理学的fage镜相关性的研究中，除了玻色（Bose-einstein）相关性外，还必须考虑最终状态相互作用。其中，库仑相互作用在带电颗粒的情况下起着重要的作用。最近的测量结果表明，在重离子碰撞中，bose-inenstein相关性可以通过莱维型源来描述，而不是更常见的高斯假设。此外，三维测量结果表明，根据框架的选择，在Lévy-type源的情况下，在高斯源函数的假设下观察到的球形对称性的偏差仍然存在。为了阐明这种三维lévy型相关测量值，因此在非球面lévy源的情况下研究库仑相互作用的影响很重要。在使用Metropolis-Hastings算法的这种源函数的情况下，我们以数值计算了库仑校正因子，并将我们的结果与以前在Lévy源存在下处理库仑相互作用的方法进行了比较。
In the study of femtoscopic correlations in high-energy physics, besides Bose--Einstein correlations, one has to take final-state interactions into account. Amongst them, Coulomb interactions play a prominent role in the case of charged particles. Recent measurements have shown that in heavy-ion collisions, Bose--Einstein correlations can be best described by Lévy-type sources instead of the more common Gaussian assumption. Furthermore, three-dimensional measurements have indicated that, depending on the choice of frame, a deviation from spherical symmetry observed under the assumption of Gaussian source functions persists in the case of Lévy-type sources. To clarify such three-dimensional Lévy-type correlation measurements, it is thus important to study the effect of Coulomb interactions in the case of non-spherical Lévy sources. We calculated the Coulomb correction factor numerically in the case of such a source function for assorted kinematic domains and parameter values using the Metropolis--Hastings algorithm and compared our results with previous methods to treat Coulomb interactions in the presence of Lévy sources.
