Gluon interference effects in t-tbar production at the Next Linear Collider

Abstract

We study the effects of gluon interference in the production and semi-leptonic decay of a t-tbar pair above threshold at the Next Linear Collider (NLC). We calculate all matrix elements to next-to-leading order and use the resulting expressions for the development of a Monte Carlo event generator. Our results show effects at the level of 10% in differential cross-sections. We thus extend previous results obtained by analytical means in the soft-gluon limit.

Comments: 20 pages, incl. 9 figures, LaTeX (revtex, eepic, axodraw)