NONLINEAR
PHENOMENA IN COMPLEX SYSTEMS
An Interdisciplinary Journal
2002, Vol.5, No.2, pp.188-195
New Physics Effects in Fermion-Pair Production
at e+e- Colliders.
D. Balaschenko, E. Korshunov, and A. Pankov
Fermion compositeness, and other types of new physics
that can be described by the exchange of very massive particles,
can manifest themselves as the result of an effective four-fermion
contact interaction. In the case of the processes
and 
at future
colliders with 
, we examine the
sensitivity to four-fermion contact interactions of two new
integrated observables, 
and 
, conveniently
defined for such kind of analysis. We find that, if longitudinal
polarization of the electron beam were available, these
observables would offer the opportunity to separate the helicity
cross sections and, in this way, to derive model-independent
bounds on the relevant parameters.
Key words:
four-fermion contact interaction, fermion-pair production, a large
universal energy scale
Full text:
Acrobat PDF (178KB)
PostScript (560KB)
PostScript.gz (174KB)
Copyright © Nonlinear Phenomena in Complex Systems.
Last updated: October 16, 2002