BS Mixing and \(\sin 2\varPhi _{B_s}\)

There were two intriguing hints for New Physics at the B factories in the study of CP violation in \(b\rightarrow s\) transitions. \({\varDelta S}\), the difference in time-dependent CPV between charmless \(b\rightarrow s\bar{q}q\) modes and \(\sin 2\phi _1/\beta \) measured in the \(b\rightarrow c\bar{c}s\) modes, despite early promise, faded in experimental significance, and we await further scrutiny by Belle II. \({\varDelta \mathcal{A}}_{K\pi }\), the difference in direct CPV asymmetries in \(B^+\rightarrow K^+\pi ^0\) versus \(B^0 \rightarrow K^+\pi ^-\) decays, is experimentally established, and it could indeed arise from New Physics CPV through the electroweak penguin amplitude. However, despite the challenge it poses to theoretical calculations, it appears that the color-suppressed amplitude is enhanced in a major and specific way so as to generate \({\varDelta \mathcal{A}}_{K\pi }\) in ( 2.10).