NAGIOS: RODERIC FUNCIONANDO

Tau-polarization at the z-peak from the acollinearity between both tau-decay products

Repositori DSpace/Manakin

Valencià Castellano

Inici
Investigació
e-prints
22 - Física
Visualitza element

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Tau-polarization at the z-peak from the acollinearity between both tau-decay products

Mostra el registre complet de l'element

Visualització (828.7Kb)

Alemany, Ricard; Rius Dionis, Nuria; Bernabeu Alberola, José; Gómez Cadenas, Juan José; Pich Zardoya, Antonio

Aquest document és un/a article, creat/da en: 1992

We discuss the possibility of measuring the tau-polarization distribution at the Z peak by studying the angular correlated distributions between the decay products Of the tau-pairs. We give explicit formulae for the energy-energy correlation and for the acollinearity distribution of the decay products of the tau-pairs, for both the cross section and the forward-backward asymmetry, as a function of the tau-Polarization and the Z-polarization. These distributions provide an independent method of measuring the tau-polarization, with a sensitivity comparable to the one that can be achieved by studying the energy spectrum of the produced pion in the decay-tau --> pi-nu(tau), and possibly better systematic errors. This new technique thus offers the prospect to achieve an increased precision in the determination of the electroweak mixing angle.

Veure al catàleg Trobes