Triple-Product Correlations in B -> V1 V2 Revisited

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  • 19 March 2003
Abstract
In this paper we re-examine T-violating triple-product correlations (TP's) in B -> V1 V2 decays. TP's are excellent probes of physics beyond the standard model (SM) for two reasons: (i) within the SM, most TP's are expect to be tiny, and (ii) unlike direct CP asymmetries, TP's are not suppressed by the small strong phases which are expected in B decays. TP's are obtained via the angular analysis of B -> V1 V2. The most promising decays for measuring TP's involve excited final-state vector mesons. In the SM, within factorization, there are only a handful of decays in which large TP's are possible, but the size of these TP's depends strongly on the size of nonfactorizable effects. TP's which vanish in the SM can be very large in models with new physics. The measurement of a nonzero TP asymmetry in a decay where none is expected would specifically point to new physics involving large couplings to the right-handed b-quark.

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