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arXiv · hep-ex/0207049

New Measurements of the D+ to K* mu nu Form Factor Ratios

The FOCUS Collaboration
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Abstract

Using a large sample of D+ to K- pi+ mu+ nu decays collected by the FOCUS photoproduction experiment at Fermilab, we present new measurements of two semileptonic form factor ratios: rv and r2. We find rv = 1.504 \pm 0.057 \pm 0.039 and r2 = 0.875 \pm 0.049 \pm 0.064. Our form factor results include the effects of the s-wave interference discussed in a previous paper.

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The FOCUS Collaboration. 2002-07-19. New Measurements of the D+ to K* mu nu Form Factor Ratios. https://doi.org/10.1016/s0370-2693(02)02386-9

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