  We develop a theory of optical transitions in Coulomb impurity-doped
two-dimensional transition metal dichalcogenide monolayers and study the
transitions from the spin-resolved valence band to the (Coulomb) donor and
acceptor impurities under the influence of a synthetic valley-selective
magnetic field produced by a mechanical strain. It is shown that the optical
properties of the system are determined by the strength of the synthetic
magnetic field, which uncovers an experimental tool, which can be used to
manipulate the properties of two-dimensional materials in valley
magneto-optoelectronics.
