Study of 3-prong hadronicτdecays with charged kaons

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Abstract
Using a sample of 4.7 fb−1 integrated luminosity accumulated with the CLEO-II detector at the Cornell Electron Storage Ring (CESR), we have measured the ratios of the branching fractions B(τ−→K−h+π−ντ)/B(τ−→h−h+h−ντ)=(5.16±0.20±0.50)×10−2, B(τ−→K−h+π−π0ντ)/B(τ−→h−h+h−π0ντ)=(2.54±0.44±0.39)×10−2, B(τ−→K−K+π−ντ)/B(τ−→h−h+h−ντ)=(1.52±0.14±0.29)×10−2, and the upper limit B(τ−→K−K+π−π0ντ)/B(τ−→h−h+h−π0ντ)<0.0154 at 95% C.L. Coupled with additional experimental information, we use our results to extract information on the structure of three-prong tau decays to charged kaons.
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