TAU-SPIN CORRELATIONS AT THE Z-PEAK - APLANARITIES OF THE DECAY PRODUCTS

被引：43

作者：

BERNABEU, J

RIUS, N

PICH, A

机构：

[1] UNIV VALENCIA,CSIC,IFIC,CTR MIXTE,E-46100 BURJASSOT,SPAIN

[2] CERN,CH-1211 GENEVA 23,SWITZERLAND

来源：

PHYSICS LETTERS B | 1991年 / 257卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(91)90885-T

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The production of tau-pairs at the Z peak leads to interesting dynamical information contained in their spin density matrix. Besides the longitudinal polarization of each tau-lepton, there are two independent spin-spin correlations associated with the transverse (within the production plane) and normal (to the production plane) polarization components. The transverse-normal spin correlation is both a parity-odd and time reversal-odd observable. We analyze the correlated angular distribution of the decay products as polarization analyzers of the tau+tau- system. We find two azimuthal asymmetries of the decay products and the incoming beam, which are able to disentangle these spin correlation observables without reconstructing the tau-direction.

引用

页码：219 / 226

页数：8

共 19 条

[11] SEMILEPTONIC DECAYS OF THE TAU-LEPTON
KUHN, H
WAGNER, F
[J]. NUCLEAR PHYSICS B, 1984, 236 (01) : 16 - 34
[12] ELECTROWEAK TEST FROM THE HARDER LEPTONS ENERGY-SPECTRUM IN Z0-]TAU+TAU--]MU+EPSILON-X
NELSON, CA
[J]. PHYSICAL REVIEW LETTERS, 1989, 62 (12) : 1347 - 1349
[13] TESTS FOR NEW PHYSICS FROM TAU-SPIN CORRELATION-FUNCTIONS FOR Z(0)-]TAU(+)TAU(-)-]A(+)B(-)X
NELSON, CA
[J]. PHYSICAL REVIEW D, 1989, 40 (01): : 123 - 144
[14] NELSON CA, PREPRINT SUNY BING
[15] NELSON CA, SUNY BING112589 PREP
[16] ORTEU S, 1990, IN PRESS SEP P TAU W
[17] POLARIZATION OBSERVABLES IN THE 3-PI-NU DECAY MODE OF THE TAU
ROUGE, A
[J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1990, 48 (01): : 75 - 77
[18] ROUGE A, ALEPH8815 NOT
[19] MUON PHYSICS
SCHECK, F
[J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1978, 44 (04): : 187 - 248

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