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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In view of both the latest LHCb measurement of $R_{K^{(*)}}$ and the new$2.8\sigma$ deviation reported by Belle II on $B^{+}\to K^{+}\nu\bar{\nu}$decays, we present a fit to the $B$ meson anomalies for various one and twodimensional hypothesis including complex Wilson coefficients. We show in amodel-independent way that the generic non-universal $U(1)^{\prime}$ extensionsof the SM, without flavour violation, fail to simultaneously fit thoseobservables and corroborate that they can modify $\mathrm{BR}(B^{+}\toK^{+}\nu\bar{\nu})$ up to only a $10\%$. In view of this deficit, we propose anew way in which those models can accommodate the data at tree level byintroducing lepton flavour violating couplings and non-diagonal elements of thecharged lepton mixing matrix, with implications in future charged leptonflavour violation searches.

$B$ meson anomalies and large $B^{+}\to K^{+}\nu\bar{\nu}$ in non-universal $U(1)^\prime$ models