R-parity violation in (t+(t)over-bar) (g)over-tilde production at LHC and Tevatron

We study the production of (t + t) (g) over tilde at the hadron colliders i n an R-parity (R-p) violating supersymmetric model. This process provides u s with information not only about R-p violation, but may also help us in de tecting the supersymmetry itself. It is possible to detect an R-p violating signal (with single gluino production) at the future hadron colliders, suc h as Fermilab Tevatron Run II or CERN Large Hadron Collider (LHC), if the p arameters in the supersymmetric R-p interactions are not. too small, e.g. f or m(g) = 1 TeV, lambda" = 0.1, still hundreds of events are produced at LH C with luminosity 30fb(-1). Even if we could not detect a signal of R-p in the experiment, we get stringent constraints on the heavy flavour R-p coupl ings. In addition to the minimal supersymmetric standard model we have also considered some models with a heavy gluino as the lightest supersymmetric particle. (C) 2000 Elsevier Science B.V. All rights reserved.