New Measurements of the D+ to K* mu nu Form Factor Ratios
arXiv:hep-ex/0207049 · doi:10.1016/S0370-2693(02)02386-9
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.
12 pages, 5 figures