INTERNATIONAL JOURNAL OF MODERN PHYSICS A, cilt.29, sa.30, 2014 (SCI-Expanded)
We search for leptophilic gauge boson Z(l) via the process e(+)e(-) -> mu(+)mu(-) ILC with root s = 1 TeV. In the leptonic extension of SM (SUC(3) x SUW(2) x U-Y (1) x U-l' (1)) we have predicted that ILC with root s = 1 TeV will enable searching Z(l) with masses up to the center-of-mass energy if the related coupling constant g(l) exceeds 10(-3) for 3 sigma observations and 5 sigma discovery. Furthermore similar results have been obtained by using artificial neural network (ANN) method.