Exclusive charmless $B_s$ hadronic decays into ${\eta }^{\prime }$ and $\eta$

Abstract

Using the next-to-leading order QCD-corrected effective Hamiltonian, charmless exclusive nonleptonic decays of the $B_s$ meson into $\eta$ or ${\eta }^{\prime }$ are calculated within the generalized factorization approach. Nonfactorizable contributions are included with two different treatments. Some subtleties involved are discussed.

7 pages, talk presented at the Fourth International Workshop on Particle Physics Phenomenology, Sun-Yat Sen University, Kaohsiung, Taiwan, June 18-21, 1998