  We investigate models of a heavy neutral gauge boson Z' which could explain
anomalies in B meson decays reported by the LHCb experiment. In these models,
the Z' boson couples mostly to third generation fermions. We show that bottom
quarks arising from gluon splitting can fuse into Z' as an essential production
mechanism at the LHC, thereby allowing to probe these models. The study is
performed within a generic framework for explaining the B anomalies that can be
accommodated in well motivated models. The flavor violating b s coupling
associated with Z' in such models produces lower bound on the production
cross-section which gives rise to a cross-section range for such scenarios for
the LHC to probe. Results are presented in Z' -> $\mu \mu$ decays with at least
one bottom-tagged jet in its final state. Some parts of the model parameter
space become constrained by the existing dimuon-resonance searches by the ATLAS
and CMS collaborations. However, the requirement of one or two additional
bottom-tagged jets in the final state would allow for probing a larger region
of the parameter space of the models at the ongoing LHC program.
