论文标题
温伯格的2因子来自螺旋性约束
Weinberg's 2-factor from helicity constraints
论文作者
论文摘要
散射幅度将理论描述与实验预测联系起来。散射幅度的低能项倾向于从高能量分解。已经建立了不同的方法来理解这种分解的机制，即温伯格定理。关于Weinberg软因素，计算已经表明该因子具有通用性能。在本次演讲中，我们表明可以根据Wigner约束独立于散射幅度来计算该因素。我们还表明，这样的约束使我们达到了一个部分微分方程的系统，该系统简化了Weinberg的软因子或两个粒子的情况。
Scattering amplitudes connect theoretical descriptions to experimental predictions. Low energy terms of the scattering amplitude tend to factorize from the high energy. Different methods have already been established to understand the mechanism of such factorization, Weinberg's theorem. With regard to the Weinberg soft factor, calculations have already shown that this factor has an universal property. In this talk, we show that it is possible to calculate this factor independently from the scattering amplitude based on the Wigner constraints. We also show that such constraints lead us to a system of partial differential equation that simplifies the construction of the Weinberg's soft factor for the case of one particle or two particles.
