THE ACTION FOR THE (PROPAGATING) TORSION AND THE LIMITS ON THE TORSION PARAMETERS FROM PRESENT EXPERIMENTAL-DATA

Starting from the well established form of the Dirac action coupled to the electromagnetic and torsion field we find that there is some addi tional softly broken local symmetry associated with torsion. This symm etry fixes the form of divergences of the effective action after the s pinor fields are integrated out. Then the requirement of renormalizabi lity fixes the torsion field to be equivalent to some massive pseudove ctor and its action is fixed with accuracy to the values of coupling c onstant of torsion-spinor interaction, mass of the torsion and higher derivative terms. Implementing this action into the abelian sector of the Standard Model we establish the upper bounds on the torsion mass a nd coupling. In our study we used results of present experimental limi ts on four-fermion contact interaction (LEP, HERA, SLAC, SLD, CCFR) an d TEVATRON limits on the cross section of new gauge boson, which could be produced as a resonance at high energy p (p) over bar collisions. (C) 1998 Elsevier Science B.V. All rights reserved.