The another τ-Meson

On the role of a 1 ( 1260 ) meson in the τ → 4 πν τ decay

Precise measurement of hadronic τ - decays with an η meson

We have studied hadronic τ decay modes involving an η meson using 490 fb−1 of data collected with the Belle detector at the KEKB asymmetric-energy e+e− collider. The following branching fractions have been measured: B(τ → Kηντ ) = (1.58± 0.05± 0.09)× 10−4, B(τ → Kπηντ ) = (4.6± 1.1± 0.4)× 10 −5, B(τ → ππηντ ) = (1.35±0.03±0.07)×10 −3 , B(τ → π−K0 Sηντ ) = (4.4±0.7±0.2)×10 −5 , and B(τ → Kηντ ) ...

THE SPINLESS SALPETER EQUATION AND MESON DYNAMICS

Applying the variational method, the spinless reduced Bethe-Salpeter (RBS) equation is solved for the mesonic systems, and the mass spectra are obtained. The method is applied to the Hamiltonian with the Gaussian and hydrogen-type trial wave functions, and different potential models are examined. The results for the different potentials are in challenge in light mesons, while they are consisten...

→ τ + τ − at the threshold and beyond

The excitation curve for the τ τ− production in electron positron annihilation near the threshold is revisited with the aim of updating and extending a previous work. We find that the corrections of the relative magnitude O(α) near the threshold are significantly contributed by the radiative modification of the Coulomb interaction between the τ leptons. The interpolation between the Coulomb eff...

Application of Current Algebra in Three Pseudoscalar Meson Decays of Τ Lepton

The decays of τ → 3πν and τ → πK∗ν,Kρν are calculated using the hard pion and kaon current algebra and assuming the Axial-Vector meson dominance of the hadronic axial currents. Using the experimental data on their masses and widths, the τ decay branching ratios into these channels are calculated and found to be in a reasonable agreement with the experimental data. In particular, using the avail...