Measurement of the branching fraction B(tau- --> K0 pi- nu) using the BaBar detector
B. Aubert, et al
TL;DR
This paper reports a highly precise measurement of the tau lepton decay branching fraction to K0 pi- nu using extensive data from the BaBar detector, confirming previous results with improved accuracy.
Contribution
The study provides the most precise measurement to date of the tau decay branching fraction to K0 pi- nu, utilizing a large dataset from the BaBar experiment.
Findings
Measured B(tau- --> K0 pi- nu) = (0.840 +/- 0.004 (stat) +/- 0.023 (syst)) %
Result is consistent with the world average
Achieved the most precise measurement to date
Abstract
A preliminary measurement of the branching fraction B(tau- --> K0 pi- nu) is made using 384.6 fb-1 of e+e- collision data provided by the PEP-II collider, operating primarily at sqrt(s)=10.58 GeV, and recorded using the BaBar detector. From this we measure: B(tau- --> K0 pi- nu) = (0.840 +/- 0.004 (stat) +/- 0.023 (syst)) %. This result is the most precise measurement to date and is consistent with the world average.
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