New Measurement of BR(D+ ->Rho0 Mu+ Nu) / BR(D+ ->K*0 Mu+ Nu) Branching Ratio

Details New Measurement of BR(D+ ->Rho0 Mu+ Nu) / BR(D+ ->K*0 Mu+ Nu) Branching Ratio New Measurement of BR(D+ ->Rho0 Mu+ Nu) / BR(D+ ->K*0 Mu+ Nu) Branching Ratio

2005-11-08

arxiv.org/abs/hep-ex/0511022v3

Phys.Lett.B637:32-38,2006

Physics

High Energy Physics

High Energy Physics - Experiment

14 pages, 2 figures; References added; Accepted Version

Scientific paper

10.1016/j.physletb.2006.04.002

Using data collected by the FOCUS experiment at Fermilab, we present a new
measurement of the charm semileptonic branching ratio BR(D+ -> rho0 mu+
nu)/BR(D+ -> K*0 mu+ nu). From a sample of 320+-44 and 11372+-161 D+ -> rho0
mu+ nu and D+ -> K*0 mu+ nu events respectively, we find BR(D+ -> rho0 mu+
nu)/BR(D+ -> K*0 mu+ nu)=0.041+-0.006(stat)+-0.004(syst).

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