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Measurement of the polarization of {tau} leptons produced in z decays at ALEPH

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Abstract

The polarization of {tau} leptons produced in the reactions e{sup +}e{sup -} {yields} {tau}{sup +}{tau}{sup -} at the Z resonance has been measured using the {tau} decay modes e{nu}{sub e}{nu}{sub {tau}}, {mu}{nu}{sub {mu}}{nu}{sub {tau}}, {pi}{nu}{sub {tau}}, {rho}{nu}{sub {tau}} and {alpha}{sub 1}{nu}{sub {tau}}. The mean value obtained is P{sub {tau}} = -0.152 {+-} 0.045. The result corresponds to a value of the electroweak mixing angle of sin{sup 2}{theta}{sub W}(M{sup 2}{sub Z}) = 0.2302 {+-} 0.0058. (author). 7 refs, 8 figs.
Authors:
Stiegler, U [1] 
  1. Max-Planck-Inst. Muenchen (Germany)
Publication Date:
Dec 31, 1993
Product Type:
Book
Report Number:
CONF-9201107-
Reference Number:
SCA: 662310; 662380; PA: AIX-26:061177; EDB-95:132742; SN: 95001462643
Resource Relation:
Conference: Adriatico research conference on polarization dynamics in nuclear and particle physics, Trieste (Italy), 7-10 Jan 1992; Other Information: PBD: 1993; Related Information: Is Part Of Polarization dynamics in nuclear and particle physics. Proceedings of the 2nd Adriatico research conference; Barut, A.O. [ed.] [Colorado Univ., Boulder, CO (United States)]; Paver, N. [ed.] [Trieste Univ. (Italy)]; Penzo, A. [ed.] [Istituto Nazionale di Fisica Nucleare, Trieste (Italy)]; Raczka, R. [ed.] [Soltan Inst. for Nuclear Studies, Otwock-Swierk (Poland)]; PB: 444 p.
Subject:
66 PHYSICS; ELECTRON-POSITRON INTERACTIONS; TAU PARTICLES; LEPTONIC DECAY; SPIN ORIENTATION; EXPERIMENTAL DATA; PARTICLE PRODUCTION; SEMILEPTONIC DECAY; Z NEUTRAL BOSONS
OSTI ID:
101455
Research Organizations:
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISBN 981-02-1423-5; TRN: XA9539760061177
Submitting Site:
INIS
Size:
pp. 183-196
Announcement Date:
Jan 16, 2004

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Citation Formats

Stiegler, U. Measurement of the polarization of {tau} leptons produced in z decays at ALEPH. IAEA: N. p., 1993. Web.
Stiegler, U. Measurement of the polarization of {tau} leptons produced in z decays at ALEPH. IAEA.
Stiegler, U. 1993. "Measurement of the polarization of {tau} leptons produced in z decays at ALEPH." IAEA.
@misc{etde_101455,
title = {Measurement of the polarization of {tau} leptons produced in z decays at ALEPH}
 author = {Stiegler, U}
 abstractNote = {The polarization of {tau} leptons produced in the reactions e{sup +}e{sup -} {yields} {tau}{sup +}{tau}{sup -} at the Z resonance has been measured using the {tau} decay modes e{nu}{sub e}{nu}{sub {tau}}, {mu}{nu}{sub {mu}}{nu}{sub {tau}}, {pi}{nu}{sub {tau}}, {rho}{nu}{sub {tau}} and {alpha}{sub 1}{nu}{sub {tau}}. The mean value obtained is P{sub {tau}} = -0.152 {+-} 0.045. The result corresponds to a value of the electroweak mixing angle of sin{sup 2}{theta}{sub W}(M{sup 2}{sub Z}) = 0.2302 {+-} 0.0058. (author). 7 refs, 8 figs.}
 place = {IAEA}
 year = {1993}
 month = {Dec}
 }