T-Odd Triple-Product Correlations in Hadronic b Decays

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We study T-violating triple-product asymmetries in the quark-level decay b -> s u u(bar) within the standard model (SM). We find that only two types of triple products are non-negligible. The asymmetry in pᵤ. [sᵤ x sᵤ(bar)] or pᵤ(bar). [sᵤ x sᵤ(bar)] can be as large as about 5%. It can be probed in B -> V₁ V₂ decays, where V₁ and V₂ are vector mesons. And the asymmetry in sb. [pᵤ x pₛ] can be in the range 1%--3%. One can search for this signal in the decay Λb -> Λπ+ π- or in B* -> Xₛ X, where Xₛ and X then each decay into two mesons. All other triple-product asymmetries are expected to be small within the SM. This gives us new methods of searching for new physics.