PREDICTIONS FOR ANOMALOUS TAU(-)GAMMA PRODUCTION AT LEP-1()TAU()

Citation
J. Biebel et T. Riemann, PREDICTIONS FOR ANOMALOUS TAU(-)GAMMA PRODUCTION AT LEP-1()TAU(), Zeitschrift fur Physik. C, Particles and fields, 76(1), 1997, pp. 53-58
Citations number
19
Categorie Soggetti
Physics, Particles & Fields
ISSN journal
01709739
Volume
76
Issue
1
Year of publication
1997
Pages
53 - 58
Database
ISI
SICI code
0170-9739(1997)76:1<53:PFATPA>2.0.ZU;2-0
Abstract
We calculate distributions for tau(+)tau(-)gamma production at LEP 1 t aking into account a potentially existing anomalous magnetic moment al pha(tau) of the tau lepton. The existing upper limits for Ja,i are kno wn from the dependence of the decay Z(0) --> tau(+)tau(-)gamma on alph a(tau)(2) and are of the order of (1-5)%. We show that such limits are also sensitive to linear terms in alpha(tau), which are of equal impo rtance at \alpha(tau)\ similar to (1-2)% and dominate below this value . Contributions from an electric dipole moment d(tau) do not interfere with the electromagnetic vertex or with the anomalous magnetic moment . Appropriate formulae are derived.