论文标题
将CDF $ W $ -BOSON质量转移与$ B \与S \ Ell^+ \ Ell^ - $异常相关联
Correlating the CDF $W$-boson mass shift with the $b \to s \ell^+ \ell^-$ anomalies
论文作者
论文摘要
CDF协作对$ W $ -BOSON质量的最近更新的测量表现出了$7σ$的偏差，这可能意味着SM之外的新物理学迹象。观察到的差异可以用带有电量表电荷并影响仪表玻色子真空极化的新费米子来解释。值得注意的是，如果新的费米子也具有与SM夸克相同的量子数，则它们可以与后者混合，从而修改企鹅图的$ b \ tos $ b \ to s \ ell^+ el^+ el^ell^ - $ trantrions。因此，$ W $ -BOSON的质量转移可能与LHCB合作在过去几年中观察到的$ B \ to $ b \ to S \ Ell^+ \ ell^ - $异常有关。为了调查这种可能性，我们在本文中考虑了一个模型，该模型包含一个新的$ u（1）^\ prime $ symmetry，该模型。发现最新的CDF $ M_W $测量和$ b \ to s \ ell^+ \ ell^ - $异常可以同时以$2σ$级别的价格同时容纳。
The recently updated measurement of the $W$-boson mass by the CDF collaboration exhibits a $7σ$ deviation from the SM expectation, which may imply a sign of new physics beyond the SM. The observed discrepancy could be explained by new fermions that carry the electroweak gauge charges and affect the vacuum polarization of gauge bosons. Notably, if the new fermions also have the same quantum numbers as of the SM quarks, they can mix with the latter and thus modify the penguin diagrams governing the $b \to s \ell^+ \ell^-$ transitions. Therefore, the $W$-boson mass shift could be related to the $b \to s \ell^+ \ell^-$ anomalies observed by the LHCb collaboration during the past few years. To investigate this possibility, we consider in this paper a model containing a vector-like top partner gauged under a new $U(1)^\prime$ symmetry. It is found that the latest CDF $m_W$ measurement and the $b \to s \ell^+ \ell^-$ anomalies can be simultaneously accommodated at $2σ$ level.
