First measurement of form factors r_A ≈ -0.112 and r_V ≈ -0.043 in D semileptonic decays to K1(1270) via amplitude analysis, plus improved branching fractions and upper limits on K1(1400) modes.
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First Measurement of the Decay Dynamics in the Semileptonic Transition of the $D^{+(0)}$ into the Axial-vector Meson $\bar K_1(1270)$
First measurement of form factors r_A ≈ -0.112 and r_V ≈ -0.043 in D semileptonic decays to K1(1270) via amplitude analysis, plus improved branching fractions and upper limits on K1(1400) modes.