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B0 -> D*- a1+: Chirality tests and resolving an ambiguity in 2β+γ

Michael Gronau·Dan Pirjol·Daniel Wyler
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Abstract

We point out that the decays of B mesons into a vector meson and an axial-vector meson can distinguish between left and right-handed polarized mesons, in contrast to decays into two vector mesons. Measurements in B0 -> D*-a1+ are proposed for testing factorization and the V-A structure of the weak b -> c current, and for resolving a discrete ambiguity in 2β+ γ.

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Michael Gronau, Dan Pirjol, Daniel Wyler. 2002-09-19. B0 -> D*- a1+: Chirality tests and resolving an ambiguity in 2β+γ. https://doi.org/10.1103/physrevlett.90.051801

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