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MEASUREMENT OF TAU-POLARIZATION IN E(-) ANNIHILATION AT ROOT-S=58 GEV()E()

Authors

HANAI H HABA J ABE K AMAKO K ARAI Y ARIMA T ASANO Y CHIBA M CHIBA Y DAIGO M FUKAWA M FUKUSHIMA Y HAMASAKI H HEMMI Y HIGUCHI M HIROSE T HOMMA Y HOSODA N ISHIHARA N IWATA Y KANZAKI J KIKUCHI R KONDO T KORHONEN TT KURASHIGE H MATSUDA EK MATSUI T MIURA M MIYAKE K MORI S NAGASHIMA Y NAKAGAWA Y NAKAMURA T NAKANO I ODAKA S OGAWA K OHAMA T OHSUGI T OHYAMA H OKABE K OKAMOTO A ONO A PENNANEN J SAKAMOTO H SAKUDA M SATO M SATO N SHIODEN M SHIRAI J SUMIYOSHI T TAKADA Y TAKASAKI F TAKITA M TAMURA N TATSUMI D TOBIMATSU K TSUBOYAMA T UEHARA S UNNO Y WATANABE T WATASE Y YABUKI F YAMADA Y YAMAGATA T YONEZAWA Y YOSHIDA H YUSA K

Citation

H. Hanai et al., MEASUREMENT OF TAU-POLARIZATION IN E(-) ANNIHILATION AT ROOT-S=58 GEV()E(), Physics letters. Section B, 403(1-2), 1997, pp. 155-162

Citations number

Categorie Soggetti

Physics

Journal title

Physics letters. Section B → ACNP

ISSN journal

03702693

Volume

403

Issue

1-2

Year of publication

1997

Pages

155 - 162

Database

ISI

SICI code

0370-2693(1997)403:1-2<155:MOTIEA>2.0.ZU;2-6

Abstract

The polarization of tau leptons in the reaction e(+)e(-) --> tau(+)tau (-) has been measured using a e(+)e(-) collider, TRISTAN, at the cente r-of-mass energy of 58 GeV. From the kinematical distributions of daug hter particles in tau --> <e nu(nu)over bar>, <mu nu(nu)over bar>, rho nu or pi(K)nu decays, the average polarization of tau(-) and its forw ard-backward asymmetry have been evaluated to be 0.012+/-0.058 and 0.0 29+/-0.057, respectively. (C) 1997 Published by Elsevier Science B.V.