M. Beccaria et al., Z-peak subtracted representation of Bhabha scattering and search for new physics effects - art. no. 053003, PHYS REV D, 6205(5), 2000, pp. 3003
To the special case of Bhabha scattering we extend the "Z-peak subtracted"
representation previously applied to e(+)e(-)-->f (f) over bar (f not equal
e). This allows us to analyze the process at any energy, while imposing in
an automatic way the constraints set by high-precision measurements at the
Z peak. The procedure turns out to be particularly convenient in a search
for a certain class of new physics effects at variable energy. A few exampl
es are considered, and the information thus obtained is combined with the c
orresponding information that can be derived from the other e(+)e(-) annihi
lation processes, both at present (CERN LEP2) and at future colliders. This
shows that the role of Bhabha scattering in this respect can be quite rele
vant.