New Measurement of BR(D + →ρ 0 µ + ν) BR ( D + →K ∗0 µ + ν) Branching Ratio The FOCUS Collaboration 1
نویسندگان
چکیده
Using data collected by the FOCUS experiment at Fermilab, we present a new measurement of the charm semileptonic branching ratio BR(D →ρμν) BR(D+→K ∗0 μ+ν) . From a sample of 320 ± 44 and 11372 ± 161 D+ → ρ0μ+ν and D+ → K−π+μ+ν events respectively, we find BR(D →ρμν) BR(D+→K ∗0 μ+ν) = 0.041 ± 0.006 (stat)± 0.004 (syst).
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