Scalar (or vector) leptoquarks in B meson anomalies

The B meson anomalies RK and RD(⁎) can be explained by the Standard Model extension which includes leptoquark states. The model containing a weak doublet scalar leptoquark with the hypercharge Y = 1/6 or a weak triplet with the hepercharge Y = 2/3 can explain both B anomalies after considering all low energy experimental constraints.