Rare nonleptonic B_s-meson decays as a probe for new physics beyond the standard model

The recent measurements on a number of b → sμ⁺μ⁻ processes have manifested anomalous results which could be early evidence for the presence of new physics beyond the standard model in b → s transitions. Supposing this to be the case, we entertain the possibility that a heavy Z' boson is responsible for these anomalies and that it also affects the rare nonleptonic decays of the ${\bar{B}}_{s}$ meson which receive substantial contributions from the so-called penguin diagrams. The majority of these ${\bar{B}}_{s}$ decay modes are not yet discovered, and within the standard model their rates have been estimated to be relatively suppressed. Taking into account various constraints, we find that the Z' effects can enlarge the rates of a few of the modes, especially ${\bar{B}}_{s}\to \,\eta {\pi }^{0}\,,\,\phi {\pi }^{0},\,\eta \omega ,\,\phi \omega$, considerably above their standard-model expectations. Consequently this Z' scenario may be experimentally testable in the near future.