论文标题
$（g-2）_μ$ vers $ k \toπ+e_ {miss} $由$（b-l）_ {23} $ boson诱导
$(g-2)_μ$ Versus $K \to π+E_{miss}$ Induced by the $(B-L)_{23}$ Boson
论文作者
论文摘要
为了解决长时间的$（g-2）_μ$异常，请参考。 [1]我们建议通过本地$（B-L）_ {23} $扩展标准模型（SM），根据该$（仅第二代和第三代费米子）。它预测了一个无形的$ z'$，其中质量$ {\ cal o}（100）$ MEV，此外，它在树级上具有改变风味的中性电流（FCNC）耦合。这样的$ z'$，通过$ k_l \ toπ^0 + z'（\ to c loop级别）$可能是自然而然的候选人，可以考虑最近的koto异常。在本文中，我们调查了这种可能性，以发现$ z'$不再负责$（g-2）_μ$异常，可以很容易地完成这项工作。我们进一步发现，可以通过对CP违规的适度调整来解释这两种异常，但可能与$ B $中的梅森腐烂相矛盾。
To address the long-standing $(g-2)_μ$ anomaly via a light boson, in Ref. [1] we proposed to extend the standard model (SM) by the local $(B-L)_{23}$, under which only the second and third generations of fermions are charged. It predicts an invisible $Z'$ with mass ${\cal O}(100)$ MeV, and moreover it has flavor-changing neutral current (FCNC) couplings to the up-type quarks at tree level. Such a $Z'$, via $K_L \to π^0 + Z'(\to ν\barν)$ at loop level, may be a natural candidate to account for the recent KOTO anomaly. In this article, we investigate this possibility, to find that $Z'$ can readily do this job if it is no longer responsible for the $(g-2)_μ$ anomaly. We further find that both anomalies can be explained with moderate tuning of the CP violation, but may contradict the $B$ meson decays.
