Novel two-loop SUSY effects on CP asymmetry in $B\to \varphi K_s$

Abstract

Inspired by the exotic measurements on the CP asymmetry in $B\to \varphi K_s$, we study a new diagram in supersymmetric models which can make the difference $\sin 2{\varphi }_1^{eff}(J/\Psi K_s)-\sin 2{\varphi }_1^{eff}(\varphi K_s)$ to be $20-50$ after satisfying the constraint from $b\to s\gamma$. We also find that the direct CP asymmetry of $b\to s\gamma$ could be $\sim 10$ and testable at $B$ factories.

arXiv comment4 pages, 1 figure, RevTex4; figure and text revised, refs. added and EDM of strange quark included, version to appear in Phys. Rev. D

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