Using data collected by the fixed target Fermilab experiment FOCUS, we present several first measurements for the semi- leptonic decay D0 → K ̄ 0π−μ+ν. Using a model that includes a K ̄ 0π− s-wave component, we measure the form factor ratios to be rv =1.71±0.68±0.34 and r2 =0.91±0.37±0.10 and the s-wave amplitude to be A=0.35±0.22±0.05 GeV−1. Finally, we measure the vector semileptonic branching ratio Γ (D0→K∗(892)−μ+ν) = 0.337 ± 0.034 ± 0.013.
Analysis of the semileptonic decay
BONOMI, Germano;
2005-01-01
Abstract
Using data collected by the fixed target Fermilab experiment FOCUS, we present several first measurements for the semi- leptonic decay D0 → K ̄ 0π−μ+ν. Using a model that includes a K ̄ 0π− s-wave component, we measure the form factor ratios to be rv =1.71±0.68±0.34 and r2 =0.91±0.37±0.10 and the s-wave amplitude to be A=0.35±0.22±0.05 GeV−1. Finally, we measure the vector semileptonic branching ratio Γ (D0→K∗(892)−μ+ν) = 0.337 ± 0.034 ± 0.013.File in questo prodotto:
| File | Dimensione | Formato | |
|---|---|---|---|
|
link_Phys.Lett.B.607_2005_67.pdf
gestori archivio
Tipologia:
Full Text
Licenza:
DRM non definito
Dimensione
264.82 kB
Formato
Adobe PDF
|
264.82 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
