English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/33359
Title: Tau polarization at the Z peak from the acollinearity between both τ-decay products
Authors: Alemany-Fernández, R.; Rius, Nuria; Bernabéu, José; Gómez Cadenas, Juan José; Pich, Antonio
Issue Date: 20-Jul-1992
Publisher: Elsevier
Citation: Nuclear Physics B 379(1-2): 3-23 (1992)
Abstract: We discuss the possibility of measuring the τ-polarization distribution at the Z peak by studying the angular correlated distributions between the decay products of the τ-pairs. We give explicit formulae for the energy-energy correlation and for the acollinearity distribution of the decay products of the τ-pairs, for both the cross section and the forward-backward asymmetry, as a function of the τ-polarization and the Z-polarization. These distributions provide an independent method of measuring the τ-polarization, with a sensitivity comparable to the one that can be achieved by studying the energy spectrum of the produced pion in the decay τ → πντ, 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.
Description: 21 páginas, 4 figuras, 6 tablas.
Publisher version (URL): http://dx.doi.org/10.1016/0550-3213(92)90587-2
URI: http://hdl.handle.net/10261/33359
DOI: 10.1016/0550-3213(92)90587-2
ISSN: 0550-3213
Appears in Collections:(IFIC) Artículos
Files in This Item:
There are no files associated with this item.
Show full item record

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.