Assuming b to u and b to c transitions share the same vector new physics, the paper predicts branching ratios, ratios, asymmetries, and polarizations for B_s to (K,K*) tau nu and B to pi tau nu.
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Probing new physics in $B_s \to (K,K^*)\tau \nu$ and $B \to \pi \tau \nu$ decays
Assuming b to u and b to c transitions share the same vector new physics, the paper predicts branching ratios, ratios, asymmetries, and polarizations for B_s to (K,K*) tau nu and B to pi tau nu.