Invariant mass spectra of $\tau^{-} \rightarrow h^{-}h^{-}h^{+}\nu$ decays

TL;DR

This paper reports measurements of invariant mass spectra for various three-hadron tau decay modes using a large dataset from the BABAR experiment, providing detailed spectral distributions.

Contribution

First measurements of invariant mass distributions for multiple tau decay channels involving three hadrons, using extensive BABAR data near 10.58 GeV.

Findings

Invariant mass spectra for four tau decay modes are presented.

Data excludes events with $K_{S}^{0} ightarrow \pi^{-}\pi^{+}$ decays.

Provides detailed spectral distributions for future analyses.

Abstract

Using 342$fb^{-1}$ of $e^{+}e^{-}$ annihilation data collected with the BABAR detector at the SLAC PEP-II electron-positron asymmetric energy collider operating at a center-of-mass energies near 10.58GeV, we present the preliminary measurements of the invariant mass distributions of $\tau^{-} \rightarrow \pi^{-}\pi^{-}\pi^{+}\nu$, $\tau^{-} \rightarrow K^{-}\pi^{-}\pi^{+}\nu$, $\tau^{-} \rightarrow K^{-}\pi^{-}K^{+}\nu$ and $\tau^{-} \rightarrow K^{-}K^{-}K^{+}\nu$, where events with $K_{S}^{0}\rightarrow \pi^{-}\pi^{+}$ decays are excluded.