Flavor anomalies from warped space

TL;DR

This paper investigates B-meson decay anomalies using a warped extra dimension model, explaining deviations via heavy vector resonances and lepton-flavor universality violation linked to fermion localization.

Contribution

It introduces a warped extra dimension framework to interpret B-meson anomalies as effects of heavy vector resonances and fermion localization, connecting to holographic duality.

Findings

Anomalies explained by heavy vector resonance exchange.

Lepton-flavor universality violation arises from fermion localization.

Model predicts specific signatures for future experiments.

Abstract

We study the recently found anomalies in $B$-meson decays within a scenario with a warped extra dimension where the Standard Model fermions are propagating in the bulk. The anomalies are then interpreted as the result of the exchange of heavy vector resonances with electroweak quantum numbers. The model naturally leads to lepton-flavor universality violation when different flavor fermions are differently localized along the extra dimension, signaling a different degree of compositeness in the dual holographic theory.