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

We study an extended Standard Model with a gauged U(1)$^{\prime}$ flavorsymmetry, motivated not only by the fermion mass hierarchy but also by theexcesses in $B \to K^{(*)} l l$ reported by the LHCb collaborations. TheU(1)$^{\prime}$ charges are assigned to quarks and leptons in aflavor-dependent manner, and flavored Higgs doublets are also introduced inorder to detail the Yukawa couplings at the renormalizable level. Then, thefermion mass hierarchy is realized by the vacuum alignment of the Higgsdoublets. In this model, flavor-changing currents involving the gauge boson ofU(1)$^{\prime}$ and the scalars generated by the Higgs doublets are predictedand the observables in the $B \to K^{(*)} l l$ process possibly deviate fromthe Standard Model predictions. We study the possibility that these newflavor-changing interactions can explain the excesses in the $B \to K^{(*)} ll$ process, and we derive some predictions for the other flavor-violatingprocesses based on the analysis. We specifically investigate the $\Delta F=2$processes and the other $B$ decays: e.g., $B \to X_s \gamma$ and $B \to D^{(*)}\tau \nu$, where the deviations are reported by the Belle and $BABAR$collaborations.

LHCb anomaly and $B$ physics in flavored Z$^{\prime}$ models with flavored Higgs doublets