# Hadronic Tau Decays at Belle

Source: [Hadronic Tau Decays at Belle](<https://www.sota2.com/research/paper/68fa220a7a2b558e2933a0e7>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-28T13:52:20.139Z

Authors: K. Inami

Published: 2008-10-20T05:01:29.000Z

## Abstract

We present a study of hadronic tau decays, especially decay into three-hadron final states with kaon(s), using more than 500fb^-1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We measure the branching ratios both inclusively and exclusively while considering the intermediated states of K(892)^\*0. The following results are obtained: B(tau- -\> K- pi+ pi- nu)=(3.25 +- 0.02 +0.16-0.15)x10^-3, B(tau- -\> K- K+ pi- nu)=(1.53 +- 0.01 +- 0.06)x10^-3, B(tau- -\> K- K+ K- nu)=(2.60 +- 0.23 +- 0.10)x10^-5 and B(tau- -\> K^\*(892)^0 K-nu)=(1.56 +- 0.02 +- 0.09)x10^-3. We also measure the mass and width of the K^\*(892)^0 resonance as M\_{K^\*(892)^0} = 895.10 +- 0.27 +- 0.31 MeV/c^2 and Gamma\_{K^\*(892)^0} = 47.23 +- 0.49 +- 0.79 MeV, which are the first results obtained using tau decay.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/0810.3464>)

[PDF](<https://arxiv.org/pdf/0810.3464.pdf>)