论文标题
恢复标准模型电动扇区中的Bloch-Nordsieck定理
Restoring the Bloch-Nordsieck theorem in the electroweak sector of the standard model
论文作者
论文摘要
由于Elitzur的定理，无法从字面意义上折断Electroweak仪表对称性。因此，相对于电子对称性，渐近状态需要明显和非扰动的量规范。可以使用Fröhlich-Morchio-Strocchi机制的扰动理论来考虑扰动理论。我们表明，这将在标准模型中的Electroweak过程中恢复Bloch-Nordsieck定理。这可能会产生实质性的影响，例如未来的Lepton Colliders，但在较低的能量下只有可忽略的影响。我们还使用PDF展示了替代实现，该实现允许在HADRON COLLIDERS上使用明显的Electroweak Bloch-Nordsieck Theorem进行清单的方法。
The electroweak gauge symmetry cannot be broken in a literal sense due to Elitzur's theorem. Thus, asymptotic states need to be manifestly and non-perturbatively gauge-invariant with respect to the electroweak symmetry. To take this suitably into account perturbation theory augmented by the Fröhlich-Morchio-Strocchi mechanism can be used. We show that this restores the Bloch-Nordsieck theorem in electroweak processes in the standard model. This has potentially substantial impact at, e.g., future lepton colliders, but has only negligible effects at lower energies. We also demonstrate an alternative implementation using PDFs, which allows an approach with manifest electroweak Bloch-Nordsieck theorem also at hadron colliders.
