Further Study On U(1) Gauge Invariance Restoration

Abstract

To further investigate the applicability of the projection scheme for eliminating the unphysical divergence $s/m_e^2$ due to U(1) gauge invariance violation, we study the process $e^{-}+W^{+}\to e^{-}+\bar{t}+b$ which possesses advantages of simplicity and clearness. Our study indicates that the projection scheme can indeed eliminate the unphysical divergence $s/m_e^2$ caused by the U(1) gauge invariance violation and the scheme can apply to very high energy region.

Latex, 13 pages, 4 EPS fiures