We show that the measurement is a probe of New Physics (NP) contributing to , independently from tests via the electroweak fit. Such NP modifies the kinematic distributions used to extract , necessitating a simultaneous fit to and NP. This effect can in principle bias the measurement, but only to a limited extent for our considered models. Given that, we demonstrate that the agreement at high-precision with SM-predicted shapes results in bounds competitive to, if not exceeding, existing ones for two examples: anomalous decay involving a gauge boson and production in the MSSM.

中文翻译：

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W玻色子质量测量的新目的：寻找轻子+MET的新物理


我们表明，该测量是新物理学（NP）的一个探针，有助于 ，独立于通过电弱拟合的测试。这种 NP 修改了用于提取 的运动学分布，因此需要同时拟合 和 NP。这种效应原则上会使测量产生偏差，但对于我们考虑的模型来说，影响程度有限。鉴于此，我们证明了与 SM 预测形状的高精度一致性导致了与现有形状的竞争（如果不超过的话），这两个例子是：涉及规范玻色子的异常衰变和 MSSM 中的产生。