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  • Publication
    New physics in b → sμ + μ −: CP-violating observables
    We perform a comprehensive study of the impact of new-physics operators with different Lorentz structures on CP-violating observables involving the b → sμ+μ− transition. We examine the effects of new vector-axial vector (VA), scalar-pseudoscalar (SP) and tensor (T) interactions on the CP asymmetries in the branching ratios and forward-backward asymmetries of B¯¯¯¯0s→μ+μ−, B¯¯¯¯0d→Xsμ+μ−, B¯¯¯¯0s→μ+μ−γ, B¯¯¯¯0d→K¯¯¯¯¯μ+μ−, and B¯¯¯¯0d→K¯¯¯¯¯∗μ+μ−. In B¯¯¯¯0d→K¯¯¯¯¯∗μ+μ−, we also explore the direct CP asymmetries in the longitudinal polarization fraction fL and the angular asymmetries A(2)T and ALT , as well as the triple-product CP asymmetries A(im)T and A(im)LT. We find that, in almost all cases, the CP-violating observables are sensitive only to new physics which involves VA operators. The VA new physics may therefore be unambiguously identified by a combined analysis of future measurements of these CP-violating observables.