English

LHCb anomalies from a natural perspective

High Energy Physics - Phenomenology 2017-03-30 v2 High Energy Physics - Experiment

Abstract

Tension between the Standard Model (SM) and data concerning bsb \rightarrow s processes has become apparent. Most notoriously, concerning the RKR_K ratio, which probes lepton non-universality in bb decays, and measurements involving the decays BKμ+μB \rightarrow K^* \mu^+ \mu^- and Bsϕμ+μB_s \rightarrow \phi \mu^+ \mu^-. Careful analysis of a wide range of bsb \rightarrow s data shows that certain kinds of new physics can significantly ameliorate agreement with experiment. Here, we show that these bsb \rightarrow s anomalies can be naturally accommodated in the context of Natural Scherk-Schwarz Theories of the Weak Scale -- a class of models designed to address the hierarchy problem. No extra states need to be introduced in order to accommodate these anomalies, and the assumptions required regarding flavor violating couplings are very mild. Moreover, the structure of the theory makes sharp predictions regarding BB meson decays into final states including τ+τ\tau^+ \tau^- pairs, which will provide a future test of these models.

Keywords

Cite

@article{arxiv.1611.03507,
  title  = {LHCb anomalies from a natural perspective},
  author = {Isabel Garcia Garcia},
  journal= {arXiv preprint arXiv:1611.03507},
  year   = {2017}
}

Comments

14 pages plus appendices, 3 figures; references added, published in JHEP

R2 v1 2026-06-22T16:48:49.576Z