We show that the recent anomalies in b→sℓ+ℓ− transitions observed by the LHCb collaboration can be accommodated within string motivated models with a low mass Z′ gauge boson. Such Z′ gauge boson can be obtained in compactifications with a low string scale. We consider a class of intersecting D-brane models, in which different families of quarks and leptons are simultaneously realized at different D-brane intersections. The explanation of b→sℓ+ℓ− anomalies via a stringy Z′ sets important restrictions on these viable D-brane constructions.
@article{arxiv.1512.02218,
title = {Stringy explanation of $b \to s \ell^+ \ell^-$ anomalies},
author = {Alejandro Celis and Wan-Zhe Feng and Dieter Lust},
journal= {arXiv preprint arXiv:1512.02218},
year = {2016}
}