%0 Journal Article %T Physics with $B \to ¦Ç'$ and $B\to J/¦×$ %A Xiao-Gang He %J Physics %D 1998 %I arXiv %X In this talk I discuss two topics related to B decays. I will first discuss the Standard Model prediction for $B\to \eta' X_s$, and then discuss how to use experimental information from $B\to J/\psi K^*$ to test CP violation beyond the SM. %U http://arxiv.org/abs/hep-ph/9812247v2