English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

To address the long-standing $(g-2)_{\mu}$ 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. Itpredicts an invisible $Z'$ with mass ${\cal O}(100)$ MeV, and moreover it hasflavor-changing neutral current (FCNC) couplings to the up-type quarks at treelevel. Such a $Z'$, via $K_L \to \pi^0 + Z'(\to \nu \bar{\nu})$ at loop level,may be a natural candidate to account for the recent KOTO anomaly. In thisarticle, we investigate this possibility, to find that $Z'$ can readily do thisjob if it is no longer responsible for the $(g-2)_{\mu}$ anomaly. We furtherfind that both anomalies can be explained with moderate tuning of the CPviolation, but may contradict the $B$ meson decays.

$(g-2)_{\mu}$ Versus $K \to \pi+E_{miss}$ Induced by the $(B-L)_{23}$ Boson